Sounds like a neat idea, but there are already things out there comparable to this. Personally, I'll stick to my DHC site for good 'ol talk (doesn't take any longer getting here from my bookmarks than an app does) and I use Mossy Oak Hunting Weather App. This app does everything your last point says and then some.
Good luck, nonetheless
...and on that day when my strength is failing, the end draws near and my times has come, still my soul will sing Your praise unending, ten thousand years and then forevermore!