I think there was a little confusion, I am not suggesting that DAS can't use G+ at all, just that it align more with a non-DAS users experience.
For example, as a non-DAS user If I have a LL return time in the next 15 minutes, I cannot hop into a 90 minutes standby line and still expect to make my LL.
However, as a DAS user if I have a LL return time in the next 15 minutes, I can reserve a DAS time for 80 minutes from now, and still make my LL.
Again, I am not sure if this should be allowed, but a DAS user could in theory be much more effective touring than a non-DAS user because they can redeem a LL while waiting in the "Standby" line. Thats why I feel like eliminating this would reduce abuse.
From my perspective (a non-DAS user), the DAS return times are meant to be a substitute for waiting in the Standby line without physically standing in the standby line. A non-DAS user cannot redeem a LL while in a standby line (you can make reservations, modify those reservations yes, but not redeem a LL).