Did you read Earthhome or Earthbound or whatever It was a disaster. I did really enjoy the Xenocide books, once, years ago. It was just such an odd direction to go from Ender's Game. I bet the novelty has worn off.
Ender's Game, as a short story, ended with Ender blowing up the alien homeworld, realizing he'd committed genocide, staring blankly into the distance, and then the two military guys are at a playground saying "huh. Kids!" The end. There really wasn't anywhere to go with it. That weird-ass 4th act Card tagged on to the novel exists pretty much so that he could dig himself out of a definitively done story. A storyteller that didn't see himself as the messiah reborn would have finished with Ender in Book 1 and then followed a different POV.