Easy fix would be to have 4 regionals for 5a and 6a. Each regional would have 8 teams and take top 4 finishers. Run 8 man scramble brackets. Then blind draw the state seeds like 321-A does. Regional 3 vs regional 2 and regional 1 vs regional 4 for a 16 man bracket at state.

Because I fully agree that it is currently very easy to figure out in 5a and 6a where everyone will land on the bracket.