Hello Nicolas! Welcome to the forum.
Lovely to hear that you like our products! The route planner is quite complex as it is. Refactoring it to also account for the weather does not seem like a logical service extension currently, as it is my understanding that this has not been done in any route-planning tools for simulators or real-life as of yet.
However, we are looking into solutions that would allow us to at the very least display weather in our products! This would come as a part of the VFR product, as these types of flights tend to be more sensitive to weather than IFR flights.
If possible, could you please elaborate on what “Optimizing for given weather conditions” means to you? Would the route planner route the flight around areas of bad weather? Would it select airports depending on the local weather conditions?
We’re interested in and thankful for your feedback!