I added Korrigan and Andrea separately because I am not sure that hey are on the lists. I added MediaWiki list to ping interested developers. Please, give your comments, suggestions etc. at wiki research list (wiki-research-l@lists.wikimedia.org).
It looks like improving Cite extension is the simplest task from the list [1]. French Wikipedia already has a working improvement [1] and Andrea made another one (including easy to use interface) [2]. There are, also, two bug reports: one for simple improving Cite [3] and one for adding BibTex compatibility [4]. The first MW bug report is very live, while the last one seems to be dead.
So, my question is: Is it possible to join efforts for making one good extension which is needed to all WM projects?
[1] - http://meta.wikimedia.org/wiki/Wikidata [2] - http://www.scionline.org/index.php/Main_Page [3] - http://bugzilla.wikimedia.org/show_bug.cgi?id=6271 [4] - http://bugzilla.wikimedia.org/show_bug.cgi?id=8167