Nerds around? How bad?
This bad.

Some brainstorms:
http://maemo.org/community/brainstor...n_imap_server/
http://maemo.org/community/brainstor..._email_client/
http://maemo.org/community/brainstor...inbox-folders/
http://maemo.org/community/brainstor...ng_operations/

But I don't know. Imho sometimes it's just better to grab n+1 competitor devices (and also your own :P) and first just dumb combine best features of these and after that start really brainstorming on how to take it to another level :|