I always hear mixed reviews about Dark Sky’s accuracy, but I guess it all depends on location. Luckily for me, it works extremely well. I use it along with other apps & the notifications I get from each pretty much say the same thing across the board. Hopefully that will continue.
I like how people are making mock designs of changes that Apple won't make. Dark Sky loses a huge part of its (potential) user base to be locked into a weather app so many actively avoid and replace. I fail to see how this is an improvement to anything other than the pockets of Dark Sky.