I know some of these ideas have probably been mentioned before but wanted to add my input on them.
Would love to have it where your character and sit on chairs, sit Indian style on the floor pillows and lay on the bed to sleep. I like to role-play with some of my friends and this would really add to the experience. Instead of always standing around, it would be nice to sit down to talk about plans or just chat. Would also love to see more interactive items on the game. A few of my top favorites are the fantastic fish bowl, cookies and milk and indoor shrine.
I would like to adjust placement of items you hang on the wall. Some pictures and other items look lower than others. Like the Red Poppy Wreath, it hangs very low and doesn't look quite right on my wall with the other decor. Also when trying to put pictures over the fireplaces, they are either going down behind it or you can't center it and it looks weird. I think there are only two pictures that work okay with the stone fireplace, but they are not as nice looking as some of the other pictures available. I love to decorate my castle and will spend hours working on it.
I would like some kind of system for clothing and gear that can't be displayed. I purchase lots of the bundles and I am sure I am not the only one. If I purchase something, I don't want to sell it or trash it to make room for other stuff I buy. I would be willing to pay for a closet that could store my clothing and stuff. I know about the mannequins and use them, but there is a limit on them. If the closet idea isn't possible then what about an elixir you buy to add to your limit on mannequins you can use? This would really be helpful.