I’m sure this has already been proposed a bajillion times, but it would be nice if we didn’t have a disproportionate amount of tonics of mending to the meager amount of elixirs of spirit, due to having to chug them in and out of combat whereas health is much more readily restored due to easily refreshed constitution. Even restoring a moderate portion of energy from food or essences would be welcome.
Besides… in real life: if I gobble down a food ration, isn’t that as likely to restore my energy as it is to increasing my constitution?