>The only way I can see to reduce the AD time requirement is to reduce the number of documents going through the IESG.
I think there is another way (not reduce but manage by using resources), which is the WG chairs and WG participant to do more reviews and comments and discussions. The AD MUST evaluate performance of the WG per ID. I agree that AD Time is important but he/she should manage/monitor the WGs Work Time per adopted draft.
I am sure that the problem is that most drafts are not reviewed well by WGs, but still the ADs get the hard work to review all drafts per WG while maybe the WG chair is not doing effort to FORCE the WG to give more TIME of discussion/review/quality per ID.
Finally, IMHO, our ADs are not using IETF resources/wg-efforts efficiently to assist in optimizing work per time,
AB