It would be really great if it was somehow possible to load slime-c-p-c (f-b completes to foo-bar). I tried copy the file form upstream slime, but it seems that there's a version mismatch (the slime bundled with clojure-mode doesn't know anything about define-slime-contrib).
I could try to do it myself and send a pull request, but I am not sure where to find which version of slime is bundled with clojure-mode.
My github fork of slime is on the same revision as the one that's bundled with swank-clojure. You could put these either in swank-clojure or a separate jar as an elisp payload.
Sorry if this is a stupid question, but – how do I install a dev version of a leiningen plugin? I forked the repo, made the appropriate edits and I ended up with a jar named swank-clojure-1.5.0-SNAPSHOT.jar. I tried doing "lein plugin install swank-clojure 1.5.0-SNAPSHOT", but it doesn't seem to do what I need.