"Harry should've thought to preserve the Death Eaters' heads" pretty much all of those complaints were made after the fact.
Did you even go to r/hpmor after Chapter 114? A bunch of people were saying that he should at least cool them, or try to revive them after he uses his time-turner or то incapacitate instead of kill or anything. Given that it also occurred to me immediately and was discussed multiple times on ##HPMOR, I'm pretty sure there was no hindsight involved..
This is a new thread to discuss Eliezer Yudkowsky’s Harry Potter and the Methods of Rationality and anything related to it. This thread is intended for discussing chapter 117.
Plans for next chapter release:
There is a site dedicated to the story at hpmor.com, which is now the place to go to find the authors notes and all sorts of other goodies. AdeleneDawner has kept an archive of Author’s Notes. (This goes up to the notes for chapter 76, and is now not updating. The authors notes from chapter 77 onwards are on hpmor.com.)