Wow, thanks for the video, it really helps a lot! You´re completely right with the controls and I should also make the game more welcoming at the start, explaining better the range of the attacks and making it a bit less complex in the first waves. The MISS cooldown is just like your viewer said; it´s designed to prevent the player from mashing the buttons, you need to hit once at the right time. What´s more, landing a hit allows you to instantly cancel the attack into a new one, so you´ll always have time to act on new enemies.
Thanks again and specially for taking the time to stream this and share it, being able to watch you play the game while you comment on it is invaluable feedback!