Mike has talked about this in the General Announcements, where he said:
Mike wrote:
I'll work on adding a few of the suggestions that were mentioned in this topic.
As for newer members showing up on the high scores right away, well the current requirements for being on them are not final yet. I might think of revising them. I can't see the requirements changing all that much though. Currently someone must have been a member of the forums for at least 2 months before they appear on them as well as being at least a steel member.
Maybe adding a group for the more active members or something, I don't know how that would work though.
Having someone become a member, post 30 posts and never do anything else isn't worthy of being on the hiscores, and I assume that Mike is planning on changing this.