Considering that food often only heals 1 or 2 hp a pop, if you changed food consumption to a rest-based mechanic there would be almost zero reason to use it anymore. Especially considering the relative rarity of potions, players would be encouraged to spam long rests (to make sure their healers weren't blowing all their heals between battles) which is already a small issue.
I think making it a slower regen would balance it to be more practical as a way to replenish health while making it impractical for battles and reinforcing the importance of health potions/healers.
Last edited by Dan Quail; 11/10/20 10:05 PM.