no reason that all shockcord inside the side channels couldn't be part shockcord part static, it just adds alot of complexity into the manufactuering process, swapping out a single piece of cord for several pieces.
having cord running through a side channel is necessary on quilts like the yeti because the sides of the quilt are convex...attaching to the 4 corners only would leave the sides floppy in a situation like that. having some kind of cord running through the sides allows you to slide the quilt on the suspension of course which allows for exact positioning.
no worries about using some static in the system provided the quilt still has enough give while still providing enough tension to keep it tight to the bottom of the hammock.
do the HG uq's still have a drawcord at the ends?