I’m not trying to be negative with your efforts, just that the ever changing weather and the inaccuracy of almost any longer term forecasting product on a granular level requires 3 things that must be learned for any pilot( let alone a VFR only pilot): they are decision making, interpretation, and flexibility ( there could be more things I’m forgetting but these are the three obvious ones that come to my mind). I can see where if one is locked in by something you have created to help plan a trip, many times when your product would say not possible, I would think that workarounds could be a slightly different routing that might be longer or leaving earlier or later, would get one there safely. And you have to be flexible enough to wait for the latest weather data to make final decisions on go, no go, or modify and go. Almost all of us who actually go places on a regular basis, practice these skills. There is a limit to how much you can or should dumb down the process, or you will be canceling many trips that are possible. But what do I know, maybe you’re on to something.