A big thing for me would be a mute button. The music is very nice, but to mute it, I have to mute all things chrome/chromium. That said, this is exactly the thing I have been hoping to see for a long time. I really hope you expand on this idea even further. I really enjoy it a lot. I'd also love to see generations displayed in parallel in tiled windows, so I could watch a lot of them at the same without them being overlayed on top of each other. But the priority for me would be an option to disable audio. I suspect this will see a lot of run time!