Ah yes I too enjoy not pressing buttons because there's nothing to heal. Better Diagnosis spam even though it's an active detriment to Kardia. Woo.
This game's encounter design actively discourages you from engaging with healing any more than is necessary. Fixing that would either involve substantially increasing the difficulty of most content to facilitate the active use of the current healing kits (ultimately requiring a rebalance of them to make it work as intended as MP costs would suddenly become a problem again), or require them to overhaul the role to match the encounter design. Most would agree the latter is easier, provided the devs actually had the resources and inclination to spare the attention.
Ever since ShB my opinion has been that neither exists, which means the solution is to tell them to get healer designers.