You're right, Heal is not a guarantee choice for a PC. But, for a dedicated healer it'll probably be towards the top of their list.
I don't have a problem encouraging my players to fight. In fact, its the opposite and that leads me to my question. As the players increase their resources, how do we increase our threat particularly with Insanity?
Outside of repeated blunt force trauma, conditions (and I'm using Insanity because it fits my situation) add a layer of threat. But, it seems that as written they loose their potency as soon as you hit mid-level.
Insanity is just another tool of the GM. Just like environmental conditions, magical auras and interrupted rests provide layers of threat. I'm just trying to find out if anyone has had any luck with this tool in higher levels because it seems that just about anything except being hit really hard can be negated with common spells.