I would love to see WordCamp US go from town to town, becoming the 'main' WordCamp every year, so if it was in Houston, there obviously wouldn't need to be a WordCamp Houston that year, or Austin, Miami, etc.

And the hometown people who would normally run those WordCamps could participate, along with help from the primary WordCamp US team which would assist in boasting their organizational skills and bring better WordCamps to that city in the future on it's own. It's a win-win!