I'm a premium member of windy, I love your touch and the visual quality of the tools you make. Your iPhone widget is a true killer.
I would like to suggest you to integegrate a charts like the one below which ovelays models predictions (this one is the one I check daily on meteoblue).
The guys at meteoblue did quite a good job with that, but they don't have the same visual quality standards you guys have ;-)
I even think your default frocast view should integrate something like this, with your usual curb for the average and maybe very light gray in the background for other models, and the "heatmap" mode for precipitation is very efficent to get a nice overview.
It is a very quick way to visualize weather trends for upcoming hours/days based on several models.
I don't know if the img link will work for long, here is the page at meteoblue you can find inspiration.
Keep it up!