[MerelyMortal]

Having read Ender's Game half a dozen times as a kid, I never got that vibe from the story. I've only read HPMOR once (it's super long), but if there's bad writing, I didn't notice it because I was so engrossed in the story.

[aerovistae]

I'm referring to the subplot where Harry and Malfoy start organizing the other students into armies and having them battle on the grounds outside the castle.