Hey!
I just watched the 10 minute Ruby on Rails intro video (http://rubyonrails.ams.cachefly.net/rails_setup.mov) where TextMate used a pane for project files instead of the shelf. The pane looks good, any chance it will return?
I realize this will make TextMate look a lot more like Xcode, but that wouldn't bother me..
Perhaps something similar to the one in Mail2 (Tiger) .
hans petter.