I'd like to suggest adding all the menu commands and preferences into the WowAceUpdater command line parser.
Some of the Ace addons have frequent updates, and some folks have recommended running WowAceUpdater daily before running the game. I already start the game using a simple batch script that does stuff like launch Ventrilo and Thottbot. I could easily start the script with something like:
WowAceUpdater /UpdateAllInstalled /WithExternals /NoConfirm