Nope, worthless, we thought. It kept trying to get us to MK rides we have no interest at all in. Obviously, attempting to move people to the less in-demand rides. What little we tried it, Genie itself, when in the park, that is.
It wouldn't have gotten us anything we wanted with G+ or the ILL$ either. DH checked a few mornings right at 7:00 just to find out. Anything we might've done went so fast it was ridiculous, worse than trying to book BOG.
Standby lines moved fast enough we didn't feel burdened at all. However, we do rope drop and are out of the park by noon typically.