The mechanic looks there, but unfortunately as a game it feels a bit unfinished. If you really want to jazz something like this up, my advice would be to increase the pace by a lot, have boards just moving in constantly, and have the meter rapidly moving up and down and you have to keep hitting it just right at random levels throughout. Difficulty ramp could pace upwards by making the pace of the game move faster and faster. Congrats on getting something in!