Interesting change to Skye's ability. I think I prefer the old version. Sure, Skye can no longer attack within LOS. However, Skye has a speed of 5 still, and can move very far on Vyrah's turn, including before Vyrah activates- so as long as Skye is within 5 of where you want to hit, you're set. Also, Skye now has the potential to attack people NOT in your line of sight, which is a new ability. That's useful, too, since he ignores figures and terrain while moving. He could fly over some obstacles to Splig who is hiding behind a couple shadow dragons and hit him with blue, red, yellow.
And Vyrah's heroic feat got a big nerf. I found it was very hard for Skye to keep up with the heroes over large maps. Not being able to perform the attack within LOS means that there will be times when you can't do it at all...