Revisions are really taking a toll on my database. I have set the max amount of revisions for WordPress to keep and yet its still filling up. I would be nice to see some database cleanup utilities that let you set it to delete all revisions on posts that haven't been edited for 'such' days. Also, it should check for used data in the database and if its not used it will be removed on a set cleanup date. (Also configurable). Mainly, there needs to be some better ways to clean the database and keep it small. You should also have the option for separate databases for different tables. So you could have your post data on a separate database. This would make it easier for the users with limited database size. It could also speed up the database. I know many people don't even bother looking at the database or cleaning it out, but there are advantages to it. Backups will take less space, speed, performance, spam is removed, etc. Much requested feature, I know you could do it.
Best content manager ever thanks for it!