I actually think it does have one feature: the ability to edit text. For all the other things (syntax highlighting, VCS integration, debugger, test framework,

I actually think it does have one feature: the ability to edit text. For all the other things (syntax highlighting, VCS integration, debugger, test framework, compiler shortcuts), you can take away two or three of them and still have a worthwhile program. But if the text editing part is non-existent or painful to use (think only emacs bindings to a vim user, and vice versa)? It's game over.