I know this probably has been suggested before but i would love to see hereditary traits. How i think it should work is when you make your first character on the world it will randomly generate with certain traits, if the character dies then the next hearthling has a 90% chance to inherit each trait and a 10% chance to get a new trait in its place. Also some traits could be gained. For example: if a hearthling spends like 300 hours total time in a snow biome then they get an adaptation that makes them run faster and build faster and lose less stamina in snow biomes, HOWEVER you can only have one biome adaptation at one time, and a biome adaptation would have a 100% chance to be inherited.
Traits i have thought of:
Brawny +10 str
Beutiful +10 Char
Vigilant + 10 Perc
Dextrous + 10 Dex
Agile +10 Agi
Sturdy + 10 Const
Strong headed + 10 Psy
Iron willed + 10 Will
Genious + 10 Int
Quick Thinker +10 Int +10 Ua
Fast + 10 Agi + 10 Ua
Hard Hitter + 10 Melee + 10 Smithing
Natural Tracker + 10 Perc +10 Stealth +10 Survival + 10 Exploration
Natural Hunter + 10 MM +10 Perc + 10 Stealth
Lone Hunter +100 Stealth
Celtic Fortitude +15 Farming + 5 Const
Nordic Fortitude + 20 Str
Post more ideas for traits if you come up with more or better ones.