1. That is a good point, and I will grant you that.
2. I'm not sure having something like a 50 post minimum is going to make people think it's an old boys club. Someone could easily do that in a week, without even bumping their post count with "Welcome to the forum" types of posts on the newby threads.
It's moot point anyway, because jwire said there wouldn't be a post limit, and that's the final answer.