Funnily enough, for my Dead Rider play, this barely affects me. For me, Dead Rider is all about the reap and the triple crow trigger on his Revel. Sure, it is one less damage now, but other than that it is still great (with the option of anti-demise tech!)
Oooo, I forgot she can Shrug Off the Slow! That means I would still play Molly & Kirai if... You could summon her xD I'll investigate Kirai & Molly.
I think people may be overreacting. Usually these types of nerfs don't end up breaking the crew entirely. They just go from "best at everything" to "good at some things."
Especially Yan Lo, the biggest hit is to the stupid combos that most people don't even use in casual play.