Since mysql in rawhide is now 4.1, I'd like to see the inclusion of the mysql administrator (http://www.mysql.com/products/administrator/) and the mysql query browser (http://www.mysql.com/products/query-browser/).
They are both written in GTK2 and are available under the same dual- licensing terms as mysql itself, AFAICS. The download page is here: http://dev.mysql.com/downloads/
How do these compare to phpMyAdmin (http://www.phpMyAdmin.net/), which I think most MySQL users are familiar with? (For those who haven't looked recently, phpMyAdmin is now to version 2.6.1-rc2, and works quite nicely with mysql-4.1 from Rawhide. Just unpack the tarball to your web document root and edit config.inc.php.)