I thought(some)of these up at night while i was trying to sleep. I hope you like them!
1:Useable funiture.Write on a sign,sit in a chair,jump on trampoline,ect.
2:Home pets.Either buy special pets or the pets you do not use wander around the house.
3:Minigame tree/tent.You could buy it and play minigames with it.
4:Weather effects.For your house you could buy weather such as snow,embers,pixie dust,ect.
5:PvP Skull Riders.I have always liked the minigame skull rides and wished KI would make it into a bigger thing.
6:Neighborhoods.Make a list of people who could go to your house anytime.
7:Home guards.People oftenwonder upon this that if you have guards they need to guard something or else they wouldnt be called that.So I think that you should be able to set a reward for beating all the guards such as gold,items,or furiture. Ask questions if you need to! Well then thats all I got. see ya in the spiral! Austin DragonStone lv23 thaumaturge!