If they did that I'd prefer bottomless potions, or tying it to the repair system (and dark matter + alchemist can replenish the durability). Limit per battle rather than content (5 bottles or something, 2 extra for bosses, and further if echo tiers are reached).

If it wasn't streamlined into a system like that I'd probably stretch each potion to the limit as I generally do not like generic consumables as a whole (Souls like systems are okay). Also if it wasn't forced into a system like that I can only imagine the joy of getting a mana-less healer or floor tank lol.

That said I don't know if weaker sustain would have a net positive impact given our community predilection and how deep we are... still think the easiest bet for healers is just to give up the healers must primarily be heal responsible and give them a bunch of support and combat skills based on theme (offensive and defensive).

Paladin used to have pacification and blind CC. I don't miss flash lol, but more diverse flavor tools would be neat.