It would be great if there was a way to have plugins advertise XWork or Servlet links which allow administration at a global and space level. Currently, you can write XWork actions to perform administration, but there is no simple way to link to them.

At minimum, it would be good to have the potential for an 'admin' link in the plugin's details in the main Admin section. However, it would be nice if plugins could specify other links in both the global and space-level administration sections. And while you're at it, it would make my day if you could dynamically add an extra tab to the 'Browse Space' view for the non-admin types around.