Although I do RP occasionally, I'm not so much into it that I feel a need for more of it, so I don't have an opinion on an RP forum here.
About the "rant" forum, however, I'm not sure I understand rightly what the idea is, but, I don't know, I don't think it's such a good idea. I think we are already ranting here as much as is good for a person. You can easily get into this too much (not sure how to call it, I only have a German word for it - LOL) - you get all worked up, and all of a sudden the issue is much bigger than it would have been if you had not started to rant.
Not sure if I'm explaining this well. Sounds a lot like the boring voice of moderation.
What I mean is, if you have an issue you
can post it here - we are doing it all the time, and I think it rightly goes under "discussion". However, if there were a specific rant-forum, this might get people to rant more than otherwise they would and create a lot of bad feeling and solve no problems, but only increase them.
LOL, ok I guess I better stop now before I'm making myself completely unpopular.