Alts counting as a Pet. Basically a way to show off Some Your Outfits and Weapons.
Programmable Test Dummy i.e.Set Build/Random Attack Generator/Motion Detectable Attack i.e. People turn off your lights?
Test Dummy Attacks.
Interlocking items that are same, count as 1 item freeing up slot space.
Picture frames that allow uploaded screen shots of your favorite places and friends.
Audio Item that can play looped sounds from game. i.e. Birds/Animals/Funny noises.
The ability to be put on a Tour list for people to visit and enjoy Your Home.
A garden that will grow speacial plants for crafting.
In house event with a challenge that if completed offers Speacial Buff for X amount time.
Those Dyes no one ever buys? Use on furniture/walls/carpets.
Random NPC's from game popping in and snooping around, making trivial comments on your decorating.
A door that has OPTIONS to port directly to any other Door you have placed in another of your homes. The way storage chests work.
Just some things I think would be fun.
Feel free to add Your own Wish.
“Don’t wish it was easier, wish you were better.”