Any game that operates primarily on Holy Trinity subsets is a dogshit game. It's one thing for it to be a functional and simple answer to a broad variety of encounters by providing a simple process by which a party can mitigate damage, restore said mitigated damage, and lastly apply more damage as damage mitigation and healing do not primarily apply damage, but it's another for there to be no other approach because bosses have 70 Trillion HP and deal explicitly enough damage to not kill a max level and fully geared tank with every swipe. A more feature-rich game would allow you to actually have a functional time with a variety of builds, such as having multiple healers who deal damage every time they choose to heal or heal every time they apply damage, or reflect/mirror casters who replace the "Tank" role with carefully calculated damage reflection, or having multiple DPS who can apply immeasurable damage by way of inter-class synergies that can pay off if they race the boss to the bottom before getting hit too hard. Amazing Cultivation Simulator even has this system of Chi flow wherein a group of Cultivators make a formation that sends tons of energy towards one central leader Cultivator and imbues them with massive amounts of power to then, as an individual, obliterate all of their targets by basically fighting as one ridiculous powerhouse feeding off of the power of his disciples.