I'm sure you're familiar with USAirNet.com ?
(e.g., https://www.usairnet.com/cgi-bin/launch/code.cgi?Submit=Go&sta=Kosh&state=wi)
The ability to show several days compressed on one screen using your UI would be tremendous. And, as another user pointed out, to change models on the fly.
I'D PAY FOR THAT!