Skye Nerf = Now we may need 2 initiators instead of one, and since they are some map where you can play 0 sentinels (Bind and Split), and you might need a Diver+Viper+Smoke, you can have a situation where Skye and the Sentinel, get replaced by Fade/Breach.
That's why I feel Skye nerf = Indirect Sentinel nerf (the class, not the team), it's not a huge nerf obviously, but still a small one.