I would like to suggest the ability to scale the User Interface elements in the game.
It would be great to be able to make inventory bags, the hotbar, and the whole UI in general a different size, much smaller in my case as I play in 1360 x 768 resolution so the UI is simply huge and takes up a huge amount of real estate on my screen. Even with just my inventory bag open, about 1/5 of my view is blocked. Add the crafting window and almost half is gone. I will try to insert a picture in this post so you can see what I am dealing with.