[Kris Verdeyen]

Already mentioned in this thread, but I agree -

Lone Star/George R Brown Convention Center - I'm a big proponent of convention centers hosting regionals - lots of hotels, usually places to walk to, lots of space for pits and practice.

Crossroads/RHIT Fieldhouse - This might rival the convention center concept - the fieldhouse has a huge area for pits, with the track making a natural warning track, so that people walking through the area don't need to be hassled about safety glasses. Also, the field is totally enclosed, with a wall between it and the pits, and just one notch too small for the number of teams there, which means that it gets loud.

Not mentioned yet -
Bayou regional ca 2007 / New Orleans Convention Center - Huge area for practice, walkable to hotels and restaurants. Walkablity is nice, because it leads to more interactions between teams outside of the venue, and just simplifies logistics. I think they may have moved this to get the HS students away from Bourbon Street, though.

San Antonio Regional / Henry B Gonzales Convention Center - Same convention center benefits, big pits, lots of seating, downtown in an amazing city, etc, etc. This place could be a future contender for Championships.