Promise this is the last one, but on my super-crazy-if-this-is-possible wishlist would go the ability to half-drag à la Mission Control to peek onto the edge of an adjacent desktop without executing a full switch. Though if I recall the last time I visited the old GetSatisfaction doodad correctly, this request comes up perennially and is super-difficult to implement.
I never say impossible… but to be sure this is tricky.
A lot of edge cases. 
We’d actually have to change the system so it always tracked the gesture, like mission control does. At least for now, we have to admit that we aren’t going to implement this.
Haha, I know, and edge cases are the worst. Not to worry! 2 is another speed bump, so flipping rather than peeking is not a massive bother. But thanks for considering it!