Okay, this may be a stretch, but I'd love to see a large, (1x2 or 1x3 even) slanted, architect style drafting table added to the game, with functionality that you can write on journals or have papers scattered around with little lists and such. This would serve to help plan larger projects in an immersive way, as well as being quite charming as decoration. Lots of visual storytelling potential.
Maybe I'll learn how to mod and create one myself! ( I wish lol )