Please don't go around ruining communers to fix consumables, but Celerity idea is good.
"I also never made use of nymph hearts..I don't think I have ever used one."
I said the same, and then went and got them on a character of mine. More meele oriented. And found that a quick 300 HP boost can save your life so many times, or ensure a kill when you can lag. And it's not that many hearts.
To me nymph hearts are wrong in two ways.
So, the idea way is to replace them for something that grants HP but can't be spamed (rare, cool down, diminishing returns), and aren't grind-able (rare, heavy, cursed).
I also think it should not be rare, in order to not make Tuo Scroll irrelevant, and be available to all.
My years old idea, is turning them into a "medical kit" or "bandages" and be an item with several uses of BMG Field-Dressing.
Can also recycle Acupuncture and monk healing into this since they all have cool downs.
Or we can just code a new healing spell just for consumables and fix the problem forever.
Something with a high HP cure + cool down. Or a lower HP cure and diminishing returns.