Chattanooga(NPSL) also draws very well. Its team is supported very well by the locals. I would love to see some sort of relegation system started in the States. I think the easiest way to start out would be to make NASL/NPSL a tier 2 and tier 3 league. Split the team's 50/50 and then play out the season. Have promotion and relegation start between NASL and NPSL, because there isn't a tremendous amount of money to be gained or lost by anybody here. Move forward from there however you have to.(I'm not sure if you pull teams into the MLS via expansion, try to relegate & promote with the MLS, take over the MLS, etc. but something would need to be done moving forward)

The big issue is the MLS has a playoff system. To truly have relegation and promotion work, you would need to go to a European set-up playing every team home and away. The good news is soccer is much better in the US than it was 10 years ago. The bad news is there is still a long way to go.