Option to Display Map and more on a Second Monitor

While watching one of the live streams, an idea came to mind.

It would be really nice to support the optional display of the overlay map on a second monitor so that it can be left up and not obscure the view in the main game window.

This multi-monitor support could be extended to allow other windows there as well like inventory or the passive skill tree, etc.

I suspect this isn't likely to happen, but it would be very nice ;)