It really is even simpler for the IHSAA than some live reveal show and the bracket population after. With there being 12 formula's it shouldn't be an issue if in fact they were all being used, it was done randomly, and then releases as the semi-state brackets a few days later rather than giving the formula out early (as use to occur). The problems seems to be the IHSAA is only using some of the 12 possible formulas and the have started to follow a pretty noticeable pattern with the formulas used each year. Not sure if its due to their laziness or whatever, but it is clearly starting to cause some concern.
I don't blame some coaches for wanting to figure out the draw if the pattern has become that predictable. The issue here though is since Regionals finish at different times there is a window available for some to "game the system" of what final round placement would work best for them if they want to end up in one of the best semi-state pod to possibly advance. While a risky strategy without knowing full Regional results, it is still one I have heard some coaches suggest when faced with the alternative of an almost certain "death draw" to make it to state.
No one wants to see the same pattern of "good" or "bad" semi-state draws every year due to certain very strong regionals always feeding in the same weight classes the same way. And no one wants to even consider the idea of someone "gaming the system" to gain a semi-state bracket advantage. Both of these are easily solved by the IHSAA take the time to truly randomize all 12 formulas to create the brackets.
I haven't done any research, but is this same exact pattern starting to show itself at the state level too? Or has the IHSAA shown a little more attention to the state brackets with a truly randomized formula?