Some honest salem comparison I can give is .. let's see :
I liked hunting more in Salem simply because the cheesing of animals, or the skill aspect of hunting was more fun, skill based indeed. Here it's have the stats or cheese really horribly with ai-pathing glitches and obstacles. Can't out run, can't dodge, you just need to get lucky with the right defenses and turn your char into a beefstick to face-slam against a bear. It's linear and not necessarily as fun as being a 50 stat muppet in salem trying to dance around a bear till your YB goes out, and should you kill it that way then kudos to you and it doesn't feel like cheesing at all.
The lack of arrow-key movement sometimes is a downside for me since there is so much crap to dodge that spam-clicking becomes a pain and sometimes i'd rather just dodge some trees and zigzag with arrow keys, though that might just be Salem nostalgia.
Foraging as of more recent updates is more relevant in Salem, mostly due to all the recipes requiring some odd ingredient or other, and there being less of an overwhelming advantage when only spamming domestic stuff. Consider current Salem gluttony mode vs current Hafen cheesefests + piefest. At higher substance everything is better than popping some berries for the variety bonus.
The diminishing returns Salem inspirationals had quite possibly did a better job of deterring the spam of good ones, than the current studying limitations do a good job of deterring spam of only crafted stuff. So you end up with people not going out for berries, not going out for fibres, not going out for curios, not going out for much. If given a choice (without a proper base and farming/animal husbandry industry atm) i'd almost always pick cooked domestic foods over most of the animal sausages for the simple reason that they have high hunger for their stats. Big bear banger sucks compared to most uncapped bear roasted cuts, and can perhaps only be used for 1 food out of a fep point gain.
For me personally, I think the prospect of building a hermit base is a lot more daunting in Hafen than in Salem. And the last base I did build in salem had me advancing quicker than I feel I am advancing now. I couldn't say if it's infrastructure that speeds it up, and how fast I can build that infrastructure, or simply the fact with a few items i can make an alt just as decent as my main (dem feasting sets), but I guess the inheritance thing will now make up for that
In terms of PvP, after getting rid of the shitty processor I pestered loftar about for ages, Salem played smoother than haven does now. To the point where I could outrun 2 raiders and outmaneuver them and feel like not a total useless lump of character. In Hafen I did outmaneuver DiS when they hit, but there is so much that can go wrong that is not within my control. All the terrain clipping and stuff with no keyboard strafing and path adjusting is painful more than anything else, and makes me personally feel not in control of my fate should I meet someone.
No braziers in hafen or any passive defenses means that there is literally no risk for a raider hitting a smaller player. They can be retarded past having the stats to break in and if you can't melee them to death that's that, all the skill it takes to raid is "eat eat steal eat break eat eat"
Brazier crits and general drain in Salem at least made me respect raiders, here they just overwhelm with numbers, useless chars that they can feed new copies of asap on account of the whole botting piles upon piles of animals to spam cheesy goodness.
Mostly the atmosphere, and the way it's tweaked doesn't appeal to my explorer senses quite as much. I hoard some useful materials in haven, port back, go out again. But it's limited in how much i can gather, and it doesn't feel like a good exploration session with 30 mostly useless things in my inventory, nor are there good things to set out for past high quality resource nodes.
All in all I know hafen just needs a lot more polish, and that was tbh my issue with haven as it was in w7, when a friend showed me it for a bit and it just seemed .. way behind Salem in terms of development. I think hafen is headed in a good direction, and it'll just take time to get to the same time invested in it as you had previously put into salem
So just keep at it, and perhaps work mainly on figuring out a good feedback system and discussion system that helps. Having people suggest exact changes doesn't seem to work, talking about abstract concepts that will later evolve into systems/mechanics seems better.
P.S. all that aside, the anti-botting and anti-uber raidergod mechanics/changed JC has implemented recently seem to be making the game a bit more annoying than it could be, so that's maybe something to keep in mind when trying to counter botters and titans later on. I'm curious how the nidbane will hold its ground compared to the "trial by hit the titan with a noodle on your crappy character you want revenge on"