If so, I have a few.
-Admins can change user's reputation balance (i.e. give them +10)
-Formatting. BBCode or other types of MarkDown would be nice
-Awards (for activity)
-Custom pages (Such as "rules", etc)
-Delete question (i.e. user spammed)
-Add tags to taglist (found 0 times, but still on list to give people a starting point)
-Usergroup permissions and settings (i.e. Editors could be renamed to Moderators, they can have possible access to ___ feature, etc)
-Style creator (edit site colors)
-Find all users made by a single IP (spam prevention)
Thanks for considering this. Also, please respond to the feedback I sent you regarding the "Powered by" whenever possible, I'd like to know.