I agree, but I dont understand why the tube has two shock cords.
I picture one shock cord on the right side for ingress/egress, the bug net continues under the hammock, comes up the left side and is draped over the ridgeline and/or the right side shock cord.
The "flap over" is held in place by weighted pockets and or Shoreborn's idea of tucking it into an elastic strap near the right side shock cord.
The head and foot end would need to be semi-permanently cinched tight with a cord lock just like a traditional tube.
1. Exit from the right and the bug net stays in place.
2. Exit easily from the left, but the bug net fall to the ground on one side.
3. Can reach out from the right for items under the hammock without messing with zipper etc.
4. The weighted pockets and/or elastic strap may reduce the sag under the hammock found in traditional tubes (which is just aesthetically unsightly)
5. If the weighted pockets / elastic strap do hold the bug net snug even when you are rolling around, then the portion of the bug net under the hammock could be made of some material to provide a summer weight UQ. (I think rolling around in the hammock will make it sag though)