It would give more value to healers if help couldn't bring up KO'd characters. I like it.

There definitely need to be good ways to bring them back during combat. If you generally had to finish combat before getting them back, getting critted would be extremely detrimental and probably just cause you to quickload rather than fighting through it.

As for the spectator, it alone is definitely not meant to be some superboss EA endgame content. I'm sure we'll have tough solo bosses later on.