The idea was good! I already saw someone else said that the '1' mode is the one that was always used, and there wasn't really anything to encourage switching to a different size. My feedback is to think of a strength and a weakness to each mode (not necessarily spikes, it can even be "mode 3 is big and slow, but can do X").
That said, congrats on the submission! I hope you'll make more in the future :)