- LzParam goes to a great deal of trouble to create case-sensitive alists. In swf7, we can just use objects.
- callInherited should be replaced by super()
- other built-in class support in Flash 7 ?
- Loading of media, LzMediaLoader should use new swf7 movieClipLoader facility (or whatever it is called).
- exception handling (OK, it's not an optimization, but its a useful swf7 feature)