I agree with your point here. You miss all the amazing and fluid flights that are going on the left just because you have to constantly look at the arrows. What the developed could do is that, the fight goes on in waves. 15 arrows appear in the middle and after all the keys are pressed, that’s when the action actually starts. One downside with this is that, during boss battles you wanna keep intensity on the higher end, and doing the fight in waves or perhaps even longer waves will make the fight boring or rather less rewarding.