The point is to design a doctrine that won't become the de-facto mandatory USF doctrine. Having a Pershing alone makes the doctrine more attractive than it's counterparts to most players. If it's too useful, you'll see Pershings every game. Talk about stale metagames...
Sure. but you do know that USF only has Airborne that scales late game. and before u say go captain for AT dont ever bother its useless. Im not allied fan boy. but to me Germany had more Tiger 1s than any other tank in WW2 Kappa
Relic has to make more than one commander with the Perishing since the Tiger has so many options