I find it much easier to see the power data read out if it's lower down the screen. (I'm using a large display, so the top is quite a ways up the wall).
It's possible to "pop out" the video and rearrange windows so it's at the top, but this adds a bunch of faff (which I don't like - the biggest selling point or PeriPedal to me is the low faff!) and clutters screen with multiple window title bars. Also, on my computer at least, a popped-out non-fullscreen video has much much lower frame-rate (about 3 vs 30, at a guess).
A simple toggle or special keypress to put the data display below the video would be great.