Quote Originally Posted by Kazelus View Post
Healers are not useless in hardcore content, they are planning their heals and mits to the incoming damage. Only very skilled player can finish hardcore content with no healer and only by taking the jobs that brings healing in their kits.

Extreme are midcore by your description, there is room for mistake and a good healer will shine in saving failing people from death. They are totally doable without preparation. Same for most savages fights, it's the player who make the preparation a necessity by asking other to have watched a guide but the content is totally doable without it. Most of my midcore friend clear savages in blind. (And about the pre-scripted fight, it's true for all content in this game)

If by preparation time, you mean bringing pots and foods or you fails, there is not difficult content that can be made without those things ruining it.
i would say in Dawntrail this is kind of untrue, at least for Sphene EX, and Zelenia EX which features a multitude of mechanics that are almost always a party wipe if failed.