Having 12 players (on roster) is not usually (that) effective. It's arguable but I think (and this I really mean it more than other things in this thread) focering managaers to have 12+ plaers on roster is not a right way to go at all.
Another option might be to change the tiebreaker criteria so that the first tiebreaker is number of forfeits (fewer being better), and then point differential is second.That might be a bit confusing though unless we displayed it on the standings page and so forth.
2. Team loses by a difference of +75 (instead of +25)