The lifts can get insane on that quad...
As for the main street lift...yes, they could easilly put in a HSDQ, as Camelback has one in their base area, and that's only 650 vertical feet, but i think those doubles should stay, it keeps that side semi empty and the snow conditions better.....
I'd be nice to see a 6pack, that way i can ski later in the day and have trail traffic be the reason for leaving, rather then lift lines...so if i REALLY want to ski more, i can....