As a big fan of building stuff in video games so i think it would be great if you could customize your own home instance a little bit if not more. Also as an RP fan i would like to see the option to do something in the line of a relationship/marriage with another character. I know i can just put it in an RP story but i would be nice as a game mechanic. Maybe also add some cosmetic differences or possibilites for characters in a relationship? I mean like custom Emotes or something. No gameplay differences however since it needs to be fair for players who dont do it. Anyways i would love to see any of these things.