How best to place 12 wrestlers in an 8 bracket tournament?
Why not pig tail the #9, #10, #11, and #12 wrestlers: (9 vs 8, 10 vs 7, 11 vs 6, 12 vs 5). Winners advance to a normal 8 man bracket: 1 vs 8 or 9, 2 vs 7 or 10, 3 vs 6 or 11, and 4 vs 5 or 12. Pig tail loses go home early.
Another pro for splitting to subs and 8 bracket regional in 321A and 4A is that there will be no byes in a region, unless someone drops out after the subs. The subs will wash out the byes and the weaker wrestlers. There will continue to be opens/byes in 5A and 6A.