Potions as an action make them useless.
What is the point of using the potion in combat in a situation where the next enemy blow will take more life than you managed to heal.
It is one of the most popular homebrews for a reason.
Healing in 5e was weakened to the ground then it is no longer 3e times where cleric was essential.
Cleric shouldn't be a mandatory character. I would not like to have one slot in the team permanently blocked.
