And some great features inherited from Visual Studio.

Peek definition. when you want to peek a few lines of a method or type, you don't have to go away from the current position. In Sublime and Atom, it really bothers to open another tab.

Navigation through overloaded methods.

When a text editor is built to help people coding easily and make itself extended easily, it has to include some basic infrastructure so that extensions can focus on their specific implementations.VSC does this well, it is not only a text editor, but also have a skeleton of an IDE, and left all other things to extensions.