We had a short (lol) game one time where if you weren't in "combat", i.e. couldnt use your "stamina, training, or luck, then you only had first levels hp.Can't say that I agree with much of the OP.
I do agree that the "fire and forget" part is nice. Yes, there is an elegance to simplicity. I can buy all that.
However, I find that HP is a barrier to many common tropes:
•Hostage situation? Hostage has enough HP to survive, so no narrative tension.
•Rushing to save someone from falling off a cliff? Meh, they'll survive the fall damage, so no narrative tension.
I also disagree with the verisimilitude stance presented, as it conflicts with personal experiences of having found victory in spite of injury.
So tied up with a dagger to your throat?
As you would expect, game became a contest of putting enemies in a vulnerable situation. Kinda fun for a while. Different for sure.