Queue-less system testing at WDW

According to many sources (like Orlando Attractions News), today the Rock'n'Rollercoaster at Disney's Hollywood Studios is testing the new Queue-less system by giving a ticket with a number and a color, and people have just to wait in the plaza in front of the ride until theyr number is called...

Here you can see some photos from Yfrog and Touring Plans

Is it a good or a bad idea? Only time will tell..

EDIT: More Photos can be seen HERE