Its not the case of SE trying to make dungeons more interesting, but a case of stupid design decisions and "self balancing" designing if i would have to call it.
Why we cant have AOE and single target merged together to create more engaging gameplay, where your best skill could do aoe damage and have more skills to rotate in. It only takes space for separate aoe and single target skills, creating an illusion of complexity where there is none. Why cant we have a 1-2-3 combo turned into aoe combo, and another 2 buttons reserved for OGCD? Whats the sense there is trying to "balance" out the dps output against multiple targets, things dying faster would feel so much better.
Balancing the multi target and single target combos and creating two separate rotations, dividing our crucial keybind space for 2 things is the worst design decision ever made in this game.
Instead of having 1 rich and fun to play skillset we are left with pathetic 1-2-3 and 1-2, this is complete nonsense.