I'm probably in too late for anything I say to really get heard, but here goes:
You're absolutely right about platoons. Starting in phase 4, the platoons are just a place for the devs to poke a stick in our eyes for not having whaled out $300 for p2p toons. Oh, you didn't pay $$$ to have a starred-up Sion and FOE? Too bad. No platoon for you! And the difference isn't even gradual: my 84mil GP guild fills every platoon in phase 3, and then maybe two or three in phase 4.
So yes. The platoons are awful and transparently punitive.
BUT, I've gotta disagree with you about the difficultly. It's (intentionally) more difficult than LS TB, yes. But I run zEP, Nihilus, Vader, Tarkin and TFP, and the amount of dominating control I have even in phase 6 is absurd. And even if they cleanse, that's just more TM for me. My team consistently gets me 4/4 there.
Nihilus lead is not your friend here. zEP is.