This actually applies to all games using this engine, not just ACW. One thing I would like to see is the ability to keep playing after the scenario has ended, either in victory or with time running out. Of course, "sudden death" can be turned off in the setup, but for learning purposes it would be useful, especially in shorter scenarios, to be able to continue past the "end." Another feature might be the ability to turn off/on "sudden death" at will, but it is not as useful a feature.
-- Mal