Having been a Sublime Text user on Windows, and now a TextMate user on OS X for a few years, it is very interesting to see Sublime Text X on OS X. Thanks!
One TextMate plugin I use a lot is ProjectPlus. It adds status icons to the side bar (like TortiseSVN does to Windows Explorer), and right-click or control-key menu items that work on selected files and directories in the side bar (update, diff with HEAD, diff with BASE, diff with ..., add to repo, remove from repo, into, status, commit, revert, resolve, etc., etc.). Having the hooks to do this in Sublime Text X would be great. Seeing file/directory status with small icons in the side bar is a real time-saver. The plugin approach should support multiple simultaneous installations of version control clients (subversion, git, mercurial, fossil, etc.).