Yeah they dropped it because of the wildly unbalanced distribution of players. Depends if you include Legends or not; but I’m not sure 40 would be possible outside of Alabama or something.
They had that back in older MUTs but you didn't get any physical boosts for matching players by same college or team. Just team skill and chemistry. If your chemistry wasn't 100 your team would play like trash, didn't matter if you had every 99 available
You can put them instead of the Team Chem slot on any card. Out of 40 chems instead of 50 with the same rewards. Would be a lot of fun.