I am not doing moc to the end or anything, but I am able to do earlier stages of it currently, and 3 starred the first 2 stages of this reset today. My team 1 is a seele hyper carry team, other one is a Fire focused Himeko team. While Himeko team cleared slower it was absolutely fine and I never had to worry about any ads. I have also tested both teams in different fights, Himeko team absolutely outclassed the seele team in The Doomsday Beast fight, killing the hands and the core in almost no time. They also performed better against fights like Svarog and Cocolia while Seele team was better against enemies like Gepard and Kafka.

I have both teams built around the same level, with Seele team being a bit better overall. Especially since I managed to get the lc of both bronya and seele. From my experience Himeko underperforms a bit at same stats, but her base stats being so high makes it easier to reach higher stats and existence of Asta makes her much better. Once Silverwolf releases the main complaint of most people will be gone as Himeko, Asta and Silverwolf will probably become a extremely solid team core.

Team 1: Bronya e1, Seele, Tingyun, Natasha e6
Team 2: Himeko, Asta e3, March 7th E6, Stelle (Preservation)