I want to be able to customize the surfaces of different objects and buildings, like being able to draw textures or designs for furniture, PWPs, etc. or even furniture itself like in sims CCs.
Custom pwp's would be amazing. I saw a picture once of some fanmade image with a 'custom' pwp and it was utterly gorgeous. I can't find the picture now, though It was like some form of fountain or tiered vase fountain.