This would be cool. Honestly this is what I would've done if I were Notch: Instead of making The End, I would have the final fight be in the Sky Lands. It would be against a different dragon called the Master Dragon, (or something like that) and you would do it a lot like you did with this version. Also the dragon would only be able to spawned if you made it spawn.
So, what do you guys think? Try it, and upload it as a video responce
download link: http://dl.dropbox.com/u/44903987/Sky%20Fight.zip
It's supposed to be harder, hence the name, "A true END fight."
Oh... and trust me, It is much harder :>
Its suposed to be like a "trailer" video, I will be recording myself playing once im done with the harder vercion