Honestly? Since you asked, I'll give you my "to the Moon" expectation first, followed by my rather realistic expectation...

I would love to have a refreshed UI, sans 3D transitions (I don't need them) that allows for existing N900 apps that mostly came from the Diablo days (read: RTComm, Xournal, DialCentral, Tear, Flash Player, Mauku 2, Skype, Evince, MPlayer, HomeTools) that is trimmed down a bit services-wise so it will be a bit leaner and "fit" on the N810 better and run nicer. Webkit based browser as the default, Mail that's installable after the fact (I don't use it, I use webmail mostly first and I dislike IMAP on the N810). That's my mile high wishlist...

To be honest, I'd just love a refreshed UI, a streamlined install from the kernel up, some more fixes that the Community SSU might not be able to provide, (easier) Yahoo via RTComm, better RTComm integration (sorta like N900)... and a real removal of the Mail app. I'm seriously down for gutting the OS a bit to almost barebones levels and build up instead.

I guess I'd like to feel up-to-date somewhat more than "Fixed in Fremantle" or "WONTFIX" has made me feel for a while.

Awesome. I know your time is limited, thanks for taking the time to respond to us here. It's not about what all you can you do by yourself. As a community, whatever little bits we can do to help you, let us know.