MMmmm I'm pretty happy with the current state of the forums. It would be nice to have a post icon that lets you know that you've posted in a thread, like a dot on the folder (not every forum does this, but it's real nice). All it would take is an inner join or two in the SQL query and maybe 5 more icons.
Edit no I take that back. I do not like the page dropdown box. It just seems like such an odd way to display the pages. And I don't really like how the newest post / last page links were implemented. I love the functionality, but I wish it was done more like phpBB (
http://www.delvarworld.com/forum/viewforum.php?f=1 ) where there are little icons next to the OP's username that you can click on to bring you to the newest post. The links next to the title of every thread kind of make everything a bit cluttered.
Edit: Ok, also, for the love of crap, auto parse the links! Use PHP, search for http:// , search from there to a space or a comma, take that string, and make it the URL and autoparse URL tags around it. This is the only forum I've been on that doens't do it automatically. It really bothers me.