Three things I would like if possible:
1) More choice of general contemporary clothing. I felt there was only the illusion of choice through most of the game, the wardrobe system seemed to have only 1 or 2 items available for each slot which made it seem a bit superfluous (I appreciate more can be unlocked). I want to be able to mix and match and experiment, which you couldn't really do with 2 main outfits. I felt it was either the 40s outfit or T-shirt/Jeans combo for most of the game.
2) Old Fashioned style hotel uniforms: See Wes Anderson's The Grand Budapest Hotel for inspiration!