I've also found myself wanting a button to move the radar display to "Now" and "Last Observation".

I would also appreciate a version without the interpolation of the original data, which would just display the pixels as they are available. There was a funnel cloud a week ago near my sister's place, and I wonder if the radar signature might have been clearer without interpolation.

I do appreciate the good job that Windy does with integration of the various systems, particularly the US and Canada. I asked Environment Canada about that integration in 2004, after seeing a prototype briefly on their site.