http://www.wargamer.com/forums/tm.asp?m=170963
While writing that post and comparing continuous time and WEGO engine types, I realized the stroke of genious that PG achieved by including order delays in the AA engine. (Originally, introduced in RDOA after the release via a patch.)
I feel WEGO does a very good job of capturing the real world sense (like in Birth of America) of the hands off detachment a commander/manager has when decisions have been made and now things must be left to proceed forward on their own.
Without the inclusion of a serious and comprehensive implementation of order delays in the AA engine, I think the series would have suffered from one of the major short comings of the continuous time model --- too much hands on control in the actions of subordinate forces which are really quite removed due to time, space, communications technology, and layers of command.
The inclusion of order delays along with ability to pause and issue orders has provided the AA engine with the best game play features of both basic engine models. Until now, I only saw order delays simply as an attempt to better model real world behavior. However, I now realize that it was also a stroke of genious in terms of resolving what might have been a major game play shortcoming. Okay, so it only took me five years to figure this out! I am not the fastest kid on the block.

* Disclosure statement: I am also a beta tester for AGEOD; Birth of America and beyond.