As I understand it, the better decks part is not true. It's based on previous support team battles, not main team ones, am I wrong?
I agree that it can be misunderstandable but
During last round's battles, Team Aether players used the following non-rare cards:
if it was previous support team battles I guess that kev wouldn't have written non-rare (because support teams cannot use rares at any point regardless).
Bans for support decks are dependent on the regular battles from previous round, not support battles. At least, that is my understanding.
The main thing to note here is that attackers will always have some key card(s) banned (even very late in war), while defenders are capable of fielding almost any deck at any stage of war as long as there are enough defenders. So, defenders should always have an advantage in deckbuilding throughout war. The only advantage attackers get is from pure # advantage late in war.
I think limiting the # attacks in a round might balance things out, but I have no idea what to even suggest since we don't even know how many war apps there will be...