It’s done to allow customization without having to reflash the controller. That is the major reason we chose to continue with the cloud method. Furthermore, the firmware just knows the method you are selecting which is an integer and that gets sent to the weather service.
We are always trying to find the best way to add more features with the limited resources and by offloading some of the weather tasks we are able to continue adding other new features.
If you have a method/formula you would like us to incorporate we could gladly do that. In fact, as I said earlier, the setup was designed to allow exactly this, a quick addition. I would just update our weather service and the app making the method available to everyone.
Thank you