So I'd like to suggest underworld portals found on Level 5 of the mines. These would randomly be dug out, and when you pass through the portal, the content inside scales based on the top 10% of the population currently inside the portal. Meaning if one hundred players enter the portal, only the top 10 matter for scaling the content. I also think that the content inside these portals should be at a minimum above 1k in each stat. Reason being is that averages of the whole can be exploited, however I admit 10% may be too low of a sample.
Inside these portals would be interesting woods, rocks, and other cosmetic materials. As well as procedurally generated curiosities(random LP and study time) that can be found with foraging, and taken off the denizens inside. Possibly even a higher natural quality than that can be found in the normal world. At most though the areas should be about 4 supergrids big.
These areas could have other dangerous things limiting or negating some of a player's advantages.
Such as:
- limiting the type of materials you can use,
Limiting gildings,
Limiting weapons,
Limiting Gear Quality,
Limiting combat actions,
Increased Cooldowns,
Decreased Damage,
Mob speed increases,
Limited mobility,
Horses go crazy,
Magnified Wounds,
Miasma(Continous HP damage while inside the Miasma clouds)
And so on
Though not necessarily all at once, or even all the time inside the same portal. As I think it could be interesting to "tame" a portal by figuring out it's patterns, when it's safest to farm, when it's best not send anyone in, or even when the portal "boss" appears.
The idea here is to give Titans and groups of Titans something to sink their teeth into, as well as develop areas of unique materials that are worth fighting over. As well as place where they can die, as I imagine the denizens wouldn't KO you and leave you alone, they'd kill you for invading their realm.