The reason for my questions is that I am just about to start porting the Siege of Avalon isometric engine over to JEDI-SDL, and I am trying to decide if it is worth doing a straight port or should I try and rewrite it. One of the limiting factors of the engine was that you couldn't really have flying objects. So when we used the engine in the Hero X title, our super heros could not fly. Which probably contributed to lack lustre sales.