Only real benifit roxy is giving is the ult drain since the meta isn't buff/debuff heavy. I'd rather run Naofumi or Jillian and keep the 6/6 Roxy link on Escanor. She's only viable if you're trying to go first, really, which doesn't matter since Naofumi makes going 2nd a cakewalk
Roxy doesnt do much cause youre not applying any debuffs except with Arthur aoe, so thats only 6% hp. Only teams with buffs are unknowns and goddesses but nobody is running them tbh so Roxy backline is doing less than LR Liz or Jillian or Percy with Naofumi in the front. Only thing youre gaining is ult control that you dont really need
Just depends on what you're going for. Ban can be nice but the debuffs could make meli a problem. I really like Naofumi too but you might not have him since he's a Collab unit.