I find I've started phasing Barris out mid run the last couple weeks. I start running into 7* fotp, Leia, QGJ, GS teams around node 5 or 6 now. When that happens there is absolutely zero room for her when it's absolutely imperative to kill those toons as fast as possible before they one shot 3+ of mine. Her minor passive heal and small health boost is irrelevant at that point. Not worth sacrificing damage for.
I've also been having the least amount of fun in GW too. Tough teams are fun to challenge when you are able to bring all your guns to bare too. But after 3-5 battle of back to back cookie cutter high DPS teams where you spend more time manipulating the seed to get favorable RNG, it gets old and boring/annoying. It has nothing to do with not finishing as I'm currently at 64 consecutive wins and everything to do with it being just not fun. Gimme some variety. Gimme a chance/reason to run fun groups.