Simple, in your example rooks have more bases than the other teams - almost more than both of the others added together. You overlooked this, and it is a quite significant fact. (It is easy to miss things like this when you have an agenda)
I can always post the screenshot of the situation before I logged off in disgust.
Rook fields shrank to 5 fields. Knits and Bish had one big fight at A7 that lasted for like one hour during the total seven hour game playing - but that was it.
During that time, we almost started a counter attack - when the Bish and Knits politely stopped fighting over A7 and started the banging again.
So, I beleive the question would be "how do you solve the gangbang problem"?
For all throughout gameplay we assumed that numbers balance would shift around naturally, and in some months the horde would become the underdogs.. and cycle cycle cycle..
Except at some point, we Rooks started being the untouchable horde at US prime time, and that didn't change.
So, there was intervention.
As much, we always assume that such 2side vs 1 gangbangs would be temporary. Well, unfortunately, on this side of the globe at our prime time, it isn't. It's a set tendency, just as much our Rookie horde was becoming.
So, I support the SBM(side balancing mechanism) - Rooks should be split and balance should be attained.
But I also think if such balance is taken into consideration, something also must be done to stop the 2vs1; the 'non-intervention to gameplay situations' tradition we've been seeing in AH has been broken now.
So, why not a balance tool for this too?