There are, in fact, seveal ways that the regionals could be grouped in a more fair manner. Below are three that come quickly to mind:

(1) use east-west highways as the dividing lines, cutting Kansas into four "east-west strips" with four regional sites in the middle of the state.

(2) Have a lottery where a set number of NWKS schools have the opportunity to be "drawn" into a regional in the east. There is room in the other regionals--for example, the Hesston regional had 135 entrants and Norton had 185. the east regionals year in and year out can absorp one or two more full teams with little problem. Of course, to implement this solution would be admitting that there is a competitive imbalance.

(3) Send six from each regional, the consolation semi-final losers would be placed in pig-tails; one would wrestle off with a #4 placed and the other with a #3 for the right to enter the bracket.
Now that four mats will be used in Hays on Friday, this is not far-fetched. This would yield a maximum of 112 additional matches (assuming all regionals had more than four entrants per weight class--not the case in some of the regionals) 28 matches per mat, and approximately adding2.5 hours.
Move the start time back to 9:00 a.m. and the ending time will approximate the "old' time when only three mats were used.