Personaly, i dont care if a basic 123 rotation becomes 111, if its just a constant rotation on its own. There is no thinking here about the next ability if you are going for the rotation.

However, once at the 3rd ability there are follow ups, it starts to matter because your button presses become an automatic reflex based memory system. You dont realy need to remember which button you pressed last because your finger is already prepared for the next one. And this sort of feedback matters in combos. Turning this into a 111 combo on that is more likely going to make the class harder to manage efficiently.

Even if there is a resource bar charging up at runtime, its something the player has to track visualy. Tactile feedback is always faster and therefor more efficient. Only when the resources are a bit more complex to manage (like red mage), then merging things could be done as QoL so you dont have to remember which button is the next one in the combo (its just that the red mage doesnt have that issue as there is nearly always an option of choise going on). But even here, lets say you can charge up your resource in a basic 12 combo, to which 2 has no use seperately (there is no 3). Then merging this is simply better. But the moment there is an option to take a diffirent path in abilities, it must be a seperate button.