* Navigation links (next/prev thread when viewing a message),
* Ability to expand threads in forum-view page,
* Showing user portraits...
* Mark messages as read/unread using views package
These features are almost done. But I have not found a simple way to sort all threads (maybe a few of them were expanded) by date, descendant. I mean, when using tree_sortkey, is not possible (in just one single sql query) to sort them by another criteria. The only way is doing 2 queries, one to get the message root id's with whatever criteria you want, and then, another query to get all messages...
Ranking posts is another idea I have, but the ratings package does not work for me right now. And also, tagging messages (automatically? depending on some rules).
BTW, I'm trying to do a 100% accesible forums enhancement, with "old-style" links (I mean, click to go to another page...), but I'd like to add a more usable one.