Turnips / Flax
Qualities naturally rising over the course of a world is really good. Somebody that makes a 2k stated character in the third month of the world should not need to put in about equal effort to somebody making a 2k stated character 12 months into the world. People that stopped playing 6 months ago ideally wouldn't still have good enough stats to login for an hour and stomp new people who have been going autistic for 2 months. The rate at which old gains are devalued should be slow, but it should happen.
With that in mind, crop caps are really bad for the game. Crop circles are worse, because they basically read: "crop caps for some, infinite quality progression for others". IMO, the ideal solution is to add some in game event, similar to meteorites, maybe a giant Wild Windsown Seed that shoots baby WWWs out like a mushroom jizzing on the world. Those WWWs could be equal to, or have a chance to be equal to the topQ seeds in the world, capped by survival. Alternatively, they could come from dungeons, or small% chance when picking WWWs normally. Delivery system doesn't matter, as long as joining the world a few months late doesn't mean ur fricked forever on farmQ.
IF YOU DON'T WANT TO DO THE ABOVE CONSIDER:
Random crop growth nodes are gay as heck
Crop circles make me want to kill myself, and very few people will abuse them, resulting in giant advantages for small groups in long worlds
Uniform crop growth makes manually farming for quality (more)unrealistic, and could be avoided by just making replanting a crop a static quality gain instead of a +/-
Wild Bones
Finding superQ bones is GAY IMO, even though I'm sure some people enjoy it. I would personally find it a lot more fun if the variance in animal quality were smaller. Once you find Q700 bones, Q500 bones are basically worthless. Some nodes can't be reliably farmed, but generally you find out about one node and just farm it forever, then grief it when you don't need bones so others can't use it. It would be cool if animal quality were a bit more consistent, and lower. Instead of having a tiny fraction of a chance to get INSANE bones, you could have a low but not absurd chance to get PRETTY GOOD bones that will actually be valuable because insane bones don't exist.
Additionally, in the early game boneQ & minehole depth are probably the most important things for industry. More intermediate villages having access to top/highQ stuff with less man hours spent could lessen the divide between big autists and middle tier bois, resulting in a more active & fun political climate.
Farmed Bones
Livestock eventually give the highestQ bones in the game. People are not going to sell or let you steal their insane bone animals, they took legit 12-18 months work at minimum to make, but once they exist, and continue progressing other people are permanently stuck behind the people with them, with no realistic way to catch up. I don't think that's FUN, especially since you might waste 12 months on it only to not be rewarded because of world reset, and I also don't think it's fair to people who join late.
The best catch-up mechanic I can think of is make the quality of chickens or rabbits raise faster than livestock can, and add a FUN EVENT that happens occasionally similar to meteor, except it just makes rabbits/chickens spawn at a quality equal to the best in the world for people to pick up(with adequate survival). It could only happen in a centralized area to encourage PVP, or everywhere as just a fun reason to login & to help balance industry.
IF YOU DON'T WANT TO DO THE ABOVE CONSIDER:
Once you know how breeding quality works, it's not an interesting choice or something to work around. It's just quality, but again, and drastically increases the effectiveness of autistic sized, unfun to maintain farms for quality growth of animals. I think removing BQ would be big for equalizing it a bit.
Likewise, instead of hide%/meat%/endurance/stamina/truffle etc being +/- 5, them being +5/-3 would mean people who don't specifically breed for it will eventually reach the caps, but autists can still be rewarded for breeding optimally by getting it much earlier. Likewise, it doesn't punish people who are doing it wrong as harshly. Maybe still do these even if you don't decide against the chicken/rabbit thing xd
Realm bonuses
If you don't have mountain trad you can't make a good anvil/stone axe/clay
If you don't have backwater you can't get good turnips>mulch>trees>tools/anvil
If you don't have fecund earth you can never have good flax>htable/rope>trees/clay>tools/anvil
If you don't have marriage of the sea early, you basically auto-lose a lot of PVP engagements(doesn't matter when qualities are higher)
Based on the previous three worlds(10, 11, 12) having realms that ran out of auth or suddenly die(Morthern Kingdom, Kingdom of Storm, A.D., Motherland, Pride, Freedom, North Star, Kingdom of Ashes, Never Neverland, probably more), or just didn't provide good buffs(Motherland, Balder's Bra, Loliconquest, Candy Kingdom, North Star, probably more). Maintaining a realm is not a reasonable ask for an average player, and planning around which realms will be bad or just straight up destroyed isn't a reasonable ask even for top autists. Your realm suddenly not being good isn't a call to action, it's an insurmountable task that can functionally ruin your entire village, if quality prog is your goal.
With the above in mind, I don't think important quality progression bonuses with permanent effects(Flax speed, Turnip speed), or giant short term bonuses(mountain trad, snek/knarrQ, and of lesser importance TruffleQ/+FEP bonus) shouldn't be tied to something so far out of most people's personal control.
Suggestion/s
For farming realm bonuses could be ignored if the above catch up mechanics were introduced. If not, replacing growth speed with some other fun buff would be fine(harvest speed, reduced stam cost from farming, etc).
Mountain tradition is busted and shouldn't provide a big mining related bonus. Fealty stoning your entire mine is an absurd ask when it's publicly available, but often in the early game it won't be everywhere. Additionally, it's very easy to just mine for a month straight, find all of the cool quality nodes, turn Mtrad on for a few hours to mine it all out, then turn it back off again before regular people are even done building their fealty stones. It says a lot about how powerful this is that every single realm I know of(early world) picked this buff first. Reducing early monopolies on highQ metal would also curb RMT a little bit, but honestly not much.
For marriage of the sea, I honestly think the best, most flavorful nerf/fix would be just making Snekkjas/Knarrs have speeds equal to a rowboat in rivers while leaving the actual realm buff the same. Or, maybe faster than a rowboat, but speed not affect by quality. Ocean shallows and Odeeper could remain the same. Getting chased by, or chasing people who's boats are faster than yours is a big gay, and an auto lose in certain situations. Early on, if somebody has a faster snek than you, you'll probably have to ditch it, which means it gets destroyed, which is a big deal to happen for free when you're putting topQ bone glue/whale mulch wood/highQ spring water wood/topQ hide strap ropes into it on top of when you can build it being time sensitive due to realm buffs(everybody builds some knarrs then turns it off so nobody else can). Another alternative is for it to be a straight speed boost, but only when inside the realm. I think there's merit to nerfing snekkja/knarr speeds inland for other PVP reasons, tho
I don't think +FEP% buff, and woodland realm(truffleQ) aren't THAT important, I just felt obligated to mention them. Changing FEP% to be hunger reduction would be just as thematically fun, but a bit more balanced fair. For TruffleQ, IMO, they're a tiny bit overpowered at high qualities, and worse than nothing at low qualities. Re-balancing their scaling a bit to be more focused on converting FEPs to will(will2?), and less on overall fep% increase could be cool, and make woodland realm fine.
I'm just going to leave a list of credo bonuses I think are overpowered. Do with them what you will:
P.S: Client updates are rly good, would advocate continuing down that path above anything else if world wipe isn't soon!