Wyvern is probably still too slow to work well in the current meta. The deck is normal summon reliant and Reactor Dragon doesn't have the stats to swing over Maximus without a skill (Maximus can use Diamond to go invulnerable and swing into it though). The Magical Hats Geartown varient is going to be way too slow against Koa'ki and vulnerable to Sandman / Trunade / Trap Stun / Bricking. The best version of the filled for the meta will probably be a turbo UAGG version because even Koa'ki struggles to deal with a floating 4400 ATK monster, but polymerization can be countered by Wall / Silent Swordsman / Floodgate. AG probably won't shine unless the meta slows down so it has time to run its combos. Negation is also becoming an issue for a lot of decks again and this might never leave the meta now with the powercreep.