I tried sending a feedback message on the banner but got an error message. My message was just a couple of sentences long.
Anyway, my message is that I hope that large circle that appears in the middle of the screen when a song is playing does disappear after a short while as it partially obstructs the cover art. Better yet, make the time the circle stays on user definable.
I've also inadvertently started another thread to discuss the HM901 not knowing this one already exists. I guess this one is about the user interface so maybe it's not a bad idea to have one about the actual hardware.