another idea, based on real example. At my place Canadian report gives terribly low estimation of temperature and completely unacceptsble but Americans gives the proper values. On the other hand precipitation and pressure are better with Canadians then with Americans. So I need to keep both reports of them on the screen.
What about this: user choses data he wants combined and gets only one customized channel, with Canadian prec. and pressure but with American temperature. That would be awesome...