After seeing some pretty spammy thread making from some people, I'd like to suggest this: Thread/Post Cooldown.
Basically, it would be a cooldown period, in which you couldn't make any new threads (could be applied to posts too). It would help to prevent spammy thread making and arguments, after which people get banned. Furthermore, this could be used as a forums/site punishment, as you could increase the cooldown time for an account, and possibly prevent angry kids spamming forums with random threads. It could also make people consider editing their posts, which is really needed, as we can see loads of posts with 3-5 posts from the same account in a row, or even more.