My main question is... what doesn't Sublime already do? I get that you want a project that's constantly getting new bugfixes and features, but there's not a whole lot that Sublime doesn't do for you as it stands. It's a mature project, most of the kinks have been ironed out. And, whatever functionality doesn't exist for it, YOU CAN BUILD.

There's only one feature that I feel could benfit ST3 right now, and that's the ability to move files from the sidebar.

But even then, I can't hate on the creator because that seems a bit outside the purview of a text editor in the first place (IMO that moves into IDE territory). I'd love it, and Sublime pretty much is my IDE already (what with build commands, project files, source control integration plugins, etc), but ultimately I'm fine with it not being there because I have a perfectly capable file manager open in a window right beside it.

I don't mean to rag on OP, I absolutely support the mentality that if you feel like something is broken you should fix it: however, in this instance I just feel like it ain't broke.