Good insite ash, to many members could be a problem. I like the suggestion for a 2nd dan minimum although not so much having 2 stages.

How about -

1) Make a thread called "Want to Join Urban?".

2) Everyone that posts there will have to post 3 replays of their choice.

3) If they are good they can be tested by any Elite.
(we can update a list in the first post for those who's SP replays passed and are waiting to be tested)

4) If he passes, he becomes a SubUrb.
(Can be announced in SubUrb News)