... what's Joan going to there? I was under the impression that you either go full retard with your damage output and expect heals from weaker Raid members, or you go full support and use Andromeda to heal the damage dealers.

I guess stacking Joans means that you can entirely ignore all damage taken, which would probably be more efficient than Andromeda healing.

Also, how did the Ragnarok Disasters get nerfed?