If would be nice to be able to limit the number of posts that a registered poster may make each day.

We have a few posters who are generally quite good but sometimes (often) post too much (thus hogging the discussions). I'm thinking in particular of one poster we've had to give "time outs" for posting 40 and even 50 posts per day. Having a settable maximum would allow these posters to choose their topics and words wisely.