I hate the current meta. You are either running CLS+R2 (usually with Han, GK, and Thrawn), or you have the abomination that is GK+Zarriss+DN. I hate it. Battles aren't strategic - you hope your Han goes first, you stun R2, and you hope RNGesus is blessing you that day so you get higher hits than the other team.
I have to assume there is a plan to get out of this meta. Crit based squads are neutered unless you have someone to reliably ability block GK and then have enough pure damage to take out Zarriss fast enough. AoE is dead because CLS squads will destroy you if you try it. Debuffs are dead because R2 allows an auto-cleanse on crit. HP is through the roof meaning more tactical squads (that don't rely on DN) are dead because they can't kill fast enough.
It's just a bad time right now, in my opinion, and there had better be a rabbit up the sleeve to get out of this.
Anyway, I'm comfortably in the 20-50 range of my Dec 15 arena, even though I have yet to increase any character to g12. I have a punchers chance against any team, and I'm not convinced focusing on g12 will do anything substantial. I might win and defend at a slightly higher rate, but I'm still going to lose on defense and win on offense most of the time.
So yeah, I've stopped growing my current team and I've turned all my resources to farming gear for the next meta, because I'm CONVINCED it's going to be First Order. Snoke, Hux, Kylo, Praetorian Guard, and Executioner Stormtrooper are, somehow, someway, going to subvert the current meta and, **** it, going to crush everybody who comes against them. And I'm going to have 600+ stun cuffs and carbantis ready for when they arrive!