Especially veresis' second idea really sounds good to me. The ones in my top entries are by for not my favourite rides, but I guess you do have the 'Featured' feature (lol) for that.
I also have an idea I think i told TW1ST3R once but I'm not sure, neither do I know if it could be implemented or is it even desired, but I'd like a little more profile customization. All you can really decide on what your profile should look like are the garages, your avatar and, of course, your entries. Perhaps something like a background or the ability to move your profile components around (shoutbox, featured entry list/top entry list/new entry list, garages, personal info, etc.), in order to make your profile really personal. At the moment it's just a quick overview of what you've done, it doesn't really represent you as a tuner.
Glad this topic is around though, spamming the chatbox with ideas doesn't really work.