.. errr
Personally, I feel 1 National Championship is the way to go. Big Mike's idea of the "Region" Champions (Northeast, Midwest, etc) doesn't really bode well for some teams. Just think if a New York team [810] were to win a Western Competition [SJ Regional] Would they be "West Coast Champions" or what about the non-US teams.. would they be the UK Champions (I'm under the impression there was only 1 UK team this year)?
Changing up the system already was rough once, why have it happen again. The transition of Orlando to Houston upset a lot of teams, why go through it again by adding more venues (higher costs) and down the line...
Adding another Nationals just seems to be more of a hassle than what it's worth. Not going to Nationals won't destroy a team or the moral of a member. I didn't go last year (team was odd number) and almost didn't get to go this year (team is even number). As long as the team can say "We are going to try and get to Nationals" they won't fail even if they don't make it.