As a longtime user of both:
> Apple Weather is less reliable than DarkSky
Doesn't seem that way to me. The predicted rain over the next hour looks the same as it did in DarkSky, and you can view the scrub the predicted clouds map timeline and see that it's predicting the same stuff. And the real-life quality where I live has shown no change, nor is there any obvious reason why there would have been. I presume Apple bought DarkSky for their tech rather than their userbase, so it wouldn't make any sense for them to reduce its computational quality.
> and not even close to feature complete.
To be honest, I don't really remember what else was in DarkSky, I just used it for its main feature -- rain over the next hour. But the Apple Weather app has a ton of features. Is there one or more specific features you're missing?
I think it sucks for Android users that Apple bought it. But for iOS I've been totally happy to have it integrated, rather than dealing with 2 separate apps.