Yeah a well geared Seele takes everything up a notch. But Qingque isn't a bad substitute for Seele and she is quantum erudition. Her playstyle may not be for everyone though. And a 4 star quantum healer has already been leaked. Hopefully she comes in the next few patches.

With Silver Wolf's weakness implant you can guarantee that any enemy in the game would be weak to your entire team. It might not be perfect for stages with lots of enemies, but for single targets it will be great.