Thanks for the feedback! Agreed about the button mashing -- I was doing it myself in play testing. I considered adding some strategic constraints rather than reaction time ones, but with the jam constraints, I didn't have time to implement it.
I like the idea of ticking for the selected clock -- I had considered some kind of audio from the all the clocks ticking, but I realized that would have sounded awful, at least without a lot of tweaking. Just the selected clock is a good idea though.