For what it is worth, I agree with your sentiment about wanting to give more teams more opportunities. I believe the addition of this version Team State, run by the IHSWCA, has been an amazing addition and has done just that, to give teams more opportunities. I personally do not mind that it is not IHSAA sponsored and think I think that it is run more effectively with the IHSWCA than it would with the IHSAA anyways.
If the venue allows for 12, then I suppose I agree this could be beneficial but just wanted to give you some stats.
4a - 38 total schools (21% of schools qualify for team state)
3a - 56 total schools (14% of schools qualify for team state)
2a - 85 total schools (14% of schools qualify for team state)
1a - 85 total schools (14% of schools qualify for team state)
*Numbers may be slightly off as I just counted the qualification sheet on the Team State leaderboard page.
EMD and Cathedral are counted in that 4a total above. To your point they "take" 2 spots every year. If you remove them, and only consider that 6 schools make it out of the 36, then that is 17% of schools that qualify for Team state.
I agree that if they can do 12 schools, then why not. However, you do have to remember that 3a + 4a is basically just one class split into 2. When you look at it that way, that class gets 16 qualifiers for Team State.
It is very unfortunate when you have potentially your best team in school history and you are being bumped to 4a when you could potentially qualify for 3a but they do have to draw the line somewhere.
Again, I agree with your sentiment but just wanted to throw some numbers out there. I think this event is great and I am sure the powers that be appreciate any input for this event as well. Each year they seem very open to changes and constructive criticism to make this event even better.