Yeah I guess the finger placement is very awkward after all. The gameplay mechanic is taken from Muse Dash which also uses horizontal scrolling and the same keys. I preferred to go with that rather than a 4 keys DDR-style gameplay, but didn't consider the finger placement as I probably was just used to it
Also no haha I didn't think of putting a menu button at the end this time. I just though it wouldn't be that useful but I guess I'll start putting menu buttons again in new games lol