Ajax enhanced authoring environment (should be more then just graphical
effects though) possibly evolving into a pure browser direct repository-client
(which would involve bypassing much of the cocoon-side logic)
Spellchecker support (on client and maybe even on server: JMS process
listening to new submits?)
Translation support (keeping in sync variants in different languages)
Dojofication of the wiki frontend application.
Database independence layer
Extension for Web App Mixin / Form Builder & Custom Form Handling
Implementation of a gdata API for the repository
Write a WADL description for the repository API and
Build custom part editors for the various microformats
(http://microformats.org) as well as
for the Google Maps KML format.