Edit: Probably the most visible change is better fonts and font rendering.
Edit 2: To expand on "all I want is code": let's say there is a menu bar with maybe 10 menus and 100 or so items, and a project navigator thingy, and a compiler output window. I would much rather these things not take up permanent space on my screen. Every one of them shows information/commands that I can access with a key combination and in some cases some fuzzy completion after hitting a key combination. Any decent editor can do this and you can learn it in an afternoon, and if you're going to spend the next couple of decades in front of it it's worth getting rid of the pixels permanently allocated to advertising "you can do this thing".