User Field for Anonymous Forum Submissions
When you open up the forum to anonymous posts (which is good for communities) it helps to have a field for who has submitted the post. Look to the Trac Discussion plugin for an example. (http://trac-hacks.org/wiki/DiscussionPlugin).
Thanks for all your brilliant work with Redmine! I can't wait to move to my new web host to start really using this great software!