So there should be absolutely no consequences for doing poorly in combat? One hit point or 100%, it is all the same as long as the character makes it through alive? I've played games with that mechanic, and IMO it changes the tone of combat to be less strategic, because good enough is treated exactly the same as very good, or even perfect.
There is a sense of reward in building your characters and developing strategies so that you do not frequently need a lot of healing after combat.
