I'm not sure why I would want to buy a program I know is final. I would like to think that the program will continue to evolve and help make my working experience easier.

Things I didn't see.
Let me export models without having to make a world with it.
Let me export animated models with bones and multi texturing.

While I can make such an exporter, it would save far more time than 40 bucks is worth just to buy your tool.