My fear about a virtual queue or reservation system in DHS is that it has two MAJOR differences between Disneyland.
1)Locals with reservations are less likely to be in the park all day before their time (causing the rest of the park to be just fine)
2)The shear attraction/ride difference to sponge up the crowd between Disneyland (and CA right there) and DHS.
If DHS does reservations in 4 hour blocks*4 a day*5,000 per block. I'm not sure DHS can hold 15,000 people waiting for their reservation plus the normal DHS crowd with just 6 rides.
Yes I know Epcot is just a gondola ride or boat ride away from DHS... still a lot farther than walking from DL to CA.