If the issue is that aggressive players get fouled out too quickly in competitive games, the easy solution is to use "sit them" instead of "let them play" and they'll play 25-30' in most games.
Except that it's not realistic at all. BB is meant to be realistic, as realistic as it can in terms of GE.
Take player X who plays for team Y in NBA (real world). In a given game, he has 3 fouls in the first quarter. He gets benched then plays again in Q2 and, hopefully he calmed down and will still be able to play in Q3 and Q4 if needed. This makes total sense.
In BB, some of the most aggressive players will be benched, then play again in Q2, make one more foul, which will send them back to the bench, and he'll most likely make one more foul in Q3 before being sent out in Q4. Total minutes played could very well be under 20 even though he got benched, and this is because under the current GE, aggressive players do not adapt at all, which is pure nonsense.
My point is, with a very aggressive players you have the two following options :
1) "sit them" and he'll eventually foul out late in the game, after playing like 20 minutes
2) "let them play" and he'll foul out after 20 minutes, that is, in the middle of Q2
Neither of these options make any sense, specifically when you consider the fact that aggressive players foul out early in the game
repeatedly.