Hi,
Currently its only possible to disable all hot corners or none at all. It should be possible to choose to disable independently hot corners.
I dont like the hot corners on the desktop, but i think that the superior left corner is usefull to change from the desktop to other Metro app. So i think it should be possible to disable every hot corners except the upper-left.
Besides there is a small bug. The show desktop (on inferior right) is disable when hot corners are disabled. Show Desktop should always be available.
Also when the mouse is near the top the hand shouldn't appear when hot corners are disabled.
Many thanks