Yeah I don't think letting 40 in would take over 1911's. But if it grew the division enough, the 1911 guys would become a smaller percent of the base.
At some point it would be hard to argue the 8+1 round limit if that happened
I'm fine the way it is really. But they could have auto and revolver minor and major for each plus an open division.
In the auto I wouldn't make a 1911 capacity concession. But you could encourage stages that avoided round counts that discriminate. Like 10, 11 and 18 round stages???