Despite the base size there was little danger to doing it unless too close to enemy models or a board edge. You could get behind an enemy position and still be facing it to shoot, which is something normal Zooming can't do. As I said, I think it's an attempt at balance. The IG Flyers losing Scout just sucks. An Outflanking Flyer, in the right situation, can be pretty nice.
"Fetch me another plaything. This one seems to have broken." -Urien Rakarth
Space Marine- "This planet is ours, witch."
Eldar- "No ... This planet is theirs ..."