I'd enjoy if fights were just like Rathalos.

As for if the trinity system currently matters, let's just say that years ago (might have been in Stormblood or earlier), I joined some all-DPS runs of many FFXIV dungeons. Some of them were very challenging, but the increased DPS meant that the bosses could be killed before all of us died. Potions also allowed us to survive things. The higher level, the easier they got as well. There was one that was really too much and that was the Wanderer's Palace one that applies Doom and demands a lot of self-healing. But who knows, maybe now with Second Wind + Bloodbath + potions you could get through that as well.

I remember returning to SWTOR briefly and they don't care about the trinity either, because it makes queue times too long.