Not a great idea. But it'll be a great idea to change the 4 panoramic desktop completely by replacing a 4 completely different panoramic background with a single easy key.
So that if i want to change the background completely, i just press the key and the more i press the more set of background changes depend on how many set i set them up.
I've got fed up of having to use the "swipe" to change desktops, it's one of those features that looks nice to start with but gets tiring after a while. So now I use that other technique, touch left-then-right-then-release-left.