I'm glad this post has stimulated some good discussion.
I'm glad afda agrees that one deck to rule them all against even a single element should be banned.
While I hate shards in PVP, let alone war, I agree with JCJ that it has added some balance to some weaker elements in war.
Honestly, if Sofree were limited to say 3 per deck (maybe 4?), it would be beatable from an aether perspective, but I haven't tested this. Hell, even if sofree was actually banned, aether would still struggle against air because the element counters us in so many different ways. But if I can predict the deck that my opponent brings, I should be able to find a way to beat it. Whether I bring those cards to war or still have them in my vault is my own problem, and a necessary part of war.