DAS is not really standby, though, despite the appearance. For my group, we can handle at max maybe 2-3 cumulative hours a day of standing in line. We need to eat, rest, move, get cool, use the bathroom, etc. But if I could do those things while virtually waiting in line, we could do 8, 10, or 12 hours of standby. We could do a lot more rides than we currently do, without Genie+. That's one of the things that makes it possible for DAS to eat into capacity so much.
There's no way to change this fact without really penalizing some people who really need it. So it's hard to see a solution outside of what they're doing. (Other than, you know, adding more capacity.)