So thanks! ^_^

My solution to this so far is to use a generic params:Object, but populate it with a simple value object that I create.

So:

public class SimpleCustomVO
{
// class members
public var prop1:String
public var prop2:String
public var prop3:Array
}

And then:

public function someEventDispatched():void
{
var params:SimpleCustomVO = new SimpleCustomVO();
params.prop1 = “foo”;
params.prop2 = “bar”;
params.prop3 = ["foo", "bar"]

dispatchEvent(new CustomEvent(CustomEvent.TYPE, params);
}

When I catch the event, I can go back and strong type the params object to my SimpleCustomVO like so:

protected function customEventListener( e : CustomEvent ):void
{
var simpleCustomVO:SimpleCustomVO = e.params as SimpleCustomVO;

var str:String = simpleCustomVO.prop1;
}

In FDT, now we can use a generic object and still get auto-complete. WHee!