If you have not seen this framework yet then it is worth checking out. Though not a 1.0 release yet it has features that make it better as ADS Technology than some alternatives. (Well, that is a subjective statement so you judge for yourself and watch the presentation.) I have worked some with this application and it was a delight. There is more to learn but with a few screencasts like this added to the site they could have a great introduction to the framework.
Note: I am also very interested in simpler use of Modules in Flex. Mate offers a very nice way to integrate modules with the event based way of the framework.