C# support static extension methods like f#1,024 votes
Right now when I want to make a section of code a method or make some simple refactoring, its not in the box. Rename is there, but its local to the page and doesn't go deep enough. The top 5-10 refactoring types should come in the box.
Merged from another idea: Improve the refactoring tools like code generation, rename, etc.487 votes