I have a lot of ideas for dramatically improving GUI shells (IE, Finder for OS X and Explorer for Windows) and I decided I was going to make one that actually incorporates all of them to make the best one ever. I've played around with a few alternatives, and none of them seem to have particularly meaningful additions. Split views. Tabs (which Mavericks now has.) Some have some funky Terminal / Pasteboard mix-ins. I'm curious, does anyone use alternative Finders and what features would you consider worth paying for? I'm expecting to charge a hefty ($50-$100) price so I'd like to make sure there's nothing meaningful missing.