I really miss the Weather Line UI too!I switched to Carrot Weather after Weather Line's announced shutdown (I was previously a WL "lifetime" member - for all that was worth).
Why aren't there more apps with a UI like WL? Is it proprietary? WL is the best (IMO) way to display weather information, and I don't know why more apps don't knock it off.
I am excited about this update though. For the first time I can finally use just 1 weather app for all my needs. IMO this app is totally worth the subscription. Responsive developer who listens to feedback, big updates all the time, can customize the entire UI more was than I could ever imagine.