Vim has something that I can't find in Sublime Text so far: auto-wrapping comments on Return, so that the comment leader is inserted automatically. Am I missing something?
Not sure if I understand what you mean exactly but try DocBlockr plugin maybe.
In vim, if you type:
// This is the first line of the comment
and hit at the end, it'll add a line and automatically insert "// " at the beginning so you can keep adding to the comment.
Pretty sure DocBlockr does that.