Each page should have a detailed title. For example, replying to a forum post uses the generic "Site name | Site motto" ("dupal.org | Community plumbing") title instead of something like "Reply to <topic> | Site name". And a lot of admin pages don't have very detailed titles for when editing/managing (too many interchangable term usage in Drupal and its modules!).
Comments to project issues aren't included in the "Recent posts"/tracker (more interchangeable terms...).
The trailing slash "/" on URLs isn't displayed. URL alias/Path module issue?
Entering an invalid project (like URLalias) brings up a vague page with a filter pull-down list (which doesn't help since there's nothing to filter) and an empty "Categories" section. How about an automatic search for the entered project if an exact result doesn't occur?
Typing of search, why isn't the advanced search available on all pages? As it is now, you have to do a search before you get the option to do an advanced search. :/ Plus, it would be nice if the esarch results were sortable by date, node type, category, user/author (argh!), etc.
Alternate themes/styles (argh, more interchangable terms!) would be nice; I don't much like white backgrounds...