I used to use JTR R2 BB8 RT Holdo on an April 2017 shard. EP teams no problem, Bastilla teams no problem. Then Traya showed up. Problem. I remodded to boost crit chance and only used RT's basic, and suddenly started beating Traya (although not as consistently as I would have liked, expose RNG was a big factor). However I started falling outside the top 150 instead of the top 50, so I switched to CLS. Seems to be holding better so far, though it's only been a few days and one day was a server disaster lol.