I hope i dont post something, which was just mentioned.
1. personal messages:
Cuold it be possible, that WordPress-users can send messages themselves beetween WordPress? It is maybe usefull. I hate sending extra emails, when i just have a little question to the blog of a friend.
2. different autors = different appearence of a post:
that means, that, when in a blog there are two or more authors, the posting of the authors dont have the same background-color or such things. maybe this could be solved with different shadows of the blog-color or anything else.
I hope my english is good enough to understand me.