Sorry about the late response.
I've been trying to figure out the best options to fight Air with, but considering the amount of cards they have in their disposal, it's going to be incredibly difficult to try to counter them with what we have. Since they're facing Light twice (as well as Darkness), I'm willing to be they're going to have more cards in their decks against Light to prevent deck-out situations (Since Light has easy access to Miracles). Against Fire, they might avoid using shields and Discords to prevent them from being destroyed, EXCEPT for their Morning Glory flying weapon deck:
5la 5lh 5lh 5lh 5lh 5lh 5li 5of 5og 5og 5oi 5oi 5oi 5oi 5oi 5oi 5ol 5ol 5pu 5pu 5pu 5pu 5pu 5pu 5pu 5pu 5pu 5pu 5pu 5pu
Adding a reflective shield (from them) would probably means they would counter most of Fire's CC/PC strategies, all the while doing major damage with Swords, the Dragon, and having a back-up plan, while preventing Fire Stall.
The one thing I -did- notice though was that they don't seem to be carrying as many pillars to spread out their quanta (I counted 101 Air Pendulums in their decks, and only 6 Air Pillars (they also had a few gravity/aether pillars on the side), which means that Earthquake might be our best bet against them, so I'm going to take a Earth-Darkness duo (again), focused on denial rather than defense, and hope for the best.
3D, since you're facing Klaymore (who used a Fractal deck last round), it's up to you on whether you want to take another Earth denial or if you'd prefer something else against him. Istari.'s Hope/FFQ deck was technically ruined by Guy-Fawkes nymph deck, but in either case, I'm going to pack a deck with 31-32 cards just to make sure that they don't try to pull some ridiculous stall deck on us.