Revan and the falcon have destroyed diversity

Revan is definitely a problem, but I don't think the Falcon is as big of a deal. Yeah, it's the best overall team on defense (some team has to be), but it's not overpowered to the point that it can't be beaten. And there's usually a lot more diversity with who the Falcon gets paired with. Even your starting team, despite having 4 ships (including the capital), has a greater degree of variance than the carbon copy of Revan, Jolee, Bastila, GK, GMY. Once you factor in all the reinforcements there's still a pretty good amount of diversity. And, unlike Revan, the best teams against the Falcon aren't even necessarily Falcon teams. They just require you to diversify your roster, which is harder in fleets, I know, but is also the obvious solution to not enough diversity.