I support the Regionals being seperated fairly, BUT;If we were to try and create parity by selecting regional participants by rankings other than location, then we would need to learn to be more patient as well. The season is 2 weeks old and we've been throwing a fit to know where the regionals are 2 months from now.
You could select the hosts, but you couldnt assign the teams until basically the end of the season. There is no way to forsee injuries, illnesses, suspensions, expulsions, etc.... There is no guarantee the percentage of ranked teams and the ranked individuals listed above are going to be that diverse at the time the Regionals actually take place. Those percentages will fluctuate each time the rankings are updated.