Basically this. And the LB would have to be dynamic and change depending on which BLU is using it and what their Mimicry is set to. Otherwise, UwU will be downright impossible to do. As would the others since each requires at least a tank LB3 at some point. And DPS LB3s are nice to have for damage.
However, I somehow don’t see them requiring Ultimate. It’s one thing to shift BLU into Savage, since the developers are all about accessibility when it comes to it. But Ultimate is an entirely different beast catered to a highly specific subset of players.
