First Order Viability?

I'm trying to max out my FO squad and find them extremely fun to run in arena and GW. They completely annihilate the Nightsisters and Empire/Sith. I just recently began putting omegas on both Kylos and it just ups the fun-factor even more. A two-turn unavoidable stun plus almost continuous advantage is hugely beneficial.

Also FOST cleanses buffs when his basic is omega'd. So you can cleanse almost constantly between him and KRU.