While I'm waiting for the next release of the clojure plugin I thought I'd chip in with a few more feature suggestions.
Don't switch focus to the REPL when evaluting the current selection. I usually want to stay in the editor window after I evaluate a piece of code.
Provide a easy way to evaluate the top-level expression. Perhaps when you have nothing selected and press Alt-S it could auto select the top level expression.
Emacs has some nice extensions that lets you directly manipulate s-expressions. That'd be very handy.
Ctrl-w should work with clojure tokens rules. For example take the variable my-clojure-symbol. If I pressed ctrl-w while positioned on clojure part it currently doesn't select the entire symbol.