I don’t much like the mechanic of healing.
First of all, it stretches my immersion in the game to think about people getting hacked up with swords and axes and fangs and fire, and then walk up to a cleric after the battle and you’re right as rain. You can keep at it all day long or until your cleric’s god (whom you don’t even worship) stops granting minor miracles for the day. To take it a step further, try imaging a world where gods really did offer those kinds of miracles to their worshipers. People would be insanely religious. Take today’s religious activists and multiply by several orders of magnitude. Imagine clerics who could simply cure the sick, cure diseases, cure the wounded, and even raise the dead! Why bother with assassinations – surely the King can afford a resurrection or two.