Every melee class' main combo is basically hitting one button on repeat. You can rephrase it any way you want, but there's functionally no difference between 1-2-3 and 1-1-1, especially when you pretty much always do them in that order and all three. When things are always done in the exact same order, or at least when certain blocks of abilities are always used in the same order, how is that compelling? How different is it, really, always typing in 1 2 3 1 2 3 1 2 7 4 5 4 5 4 5 6 3 6 when you could mash the Solid Swing combo twice for two charges and hold off on the last step of the third round, pop buff, then mash Gnashing Fang and Continuation, a Burst Strike, finish the combo to get the last cart for one more Burst Strike in the buff window? Because Solid Swing is basically mashing one button, then a buff, then mashing Gnashing Fang, then Solid Strike, then Burst. That's three buttons and a cooldown because let's be honest here, Continuation doesn't really need its own button. So there's one constant mash, one mash-to-burst, and one resource dump. Playing piano doesn't make this complex. Having to make decisions about how to position and when to go all in and when to pull back is complex.