Has anyone tried using MXML for their custom game classes? I'm curious as to whether it's a viable option for behaviour decorating? E.g.

Code:
<ns:Runable speed="10" >
  <ns:Shootable firepower="25" weapon="Sausage" >
    <ns:Hero name="Dr Drillhead The Third" renderer="{ViewFactory}" enterFrame="heartbeat(event)" />
  </ns:Shootable>
</ns:Runable>