I agree with the OP that the continuing restructuring of platoons to add in characters who are not yet attainable, without paying for them, is definitely hindering the progress of a lot of guilds to increase their star count in territory battles. However, I think this is necessary for the continuing success of the game. Yes it'd be nice for my guild and I to max out stars in territory battles but then these events become like the rancor and HAAT. They become the same short window of time to play and then just waiting for the rewards in your inbox.
The real issue I have with platoons is that most characters never see use in platoons so it is hard for me to justify adding in the new First Order characters when I think I have seen maybe three Poggles in platoons but we need 20+ Deathtroopers.