Here are my suggestions for Windy

[Siony Mario]

1. save multiple color scales of different types (Scale A: blue to purple, Scale B: green to red)
2. change the playback speed of the slider bar
3. add new map types like that of WeatherLite or Accuweather
4. new overlays like
   PoP (Probability of Precip.)
   Heat Index
   Lifted Index
   Climate Maps (Tropical Tidbits)
5. graphs and tables for the most popular forecast overlays like pressure and humidity
6. reducing the hours for the forecast (Windguru)
7. alphabetizing the 28 different weather layers
8. return button after clicking Settings (found after pressing the three-lined bars)

P.S. I'll make a new message once I come up with more suggestions.