If, like us, you've been unable to resist the masochistic urge to roll your own blogging tool (or if you're the type who, you know, directs their time and resources toward improving existing open source tools for the benefit of everyone), The Weblog Wishlist Manifesto is the type of thing you might want to read. Lisa Williams and Shimon Rura have done an excellent job summarizing and enhancing the huge list of responses to Dave Winer's request for ideas on the future of weblogging tools.
Gotta' love that weblog-as-printer-driver idea.