Yes! We must have more and better clouds!
The clouds we already have are really pretty inadequate for launching ambushes or ducking out of a fight. They're too small and often scattered. Some of my favorite fights have been ducking in and out of the clouds playing hide-and-go-seek. GVs have plenty of trees to hide in, so let's have more clouds!
Oh, and while you're at it, can we have clouds hide icons entirely, not just make them difficult to see? Sort of defeats the purpose of ducking into clouds in the first place if an enemy can still track you by your icon.