Very very handy app , but I have just one feature request.

Although this seems pretty far fetched and unrelated, Can there be an option to automatically set random wallpapers at user defined intervals, for each individual desktop. Example:

For 'desktop 1' The user selects an image folder and sets images to be changed every 4hrs.

For 'desktop 2' The user selects a different image folder and sets images to be changed (at random) every 9hrs.

Same concept for desktops 3 & 4.