When leveling up, health, mana, and energy levels are refilled to 100%. That's nice, but there's a problem with doing that in regards to the energy. If I'm already full, or if I have certain gear I like to wear for energy, that extra energy is lost, especially for quests where it's "automatically turned in" when finishing a battle, giving NO time to switch gear sets.
So, instead of refilling the energy level automatically, how about an energy potion bottle added to our bag so we can use it later?