Imagine a world where WHM plays like SMN.

Instead of rotating between summons you rotate between elements. Earth, Air, Water, and Holy. Even if we're still functionally just pressing 1111 in different flavors like SMN does, it would still do a lot to break up the monotony. SMN is known for being a great job to learn mechanics with, so we don't need to worry about players being overwhelmed.

Healers have such bloated healing kits that barely get used, and such barren DPS kits that consume 80% of their gameplay. This can't be the best SE can do. Even as a profit-maximizing strategy I refuse to believe this is the most optimal path SE can take.