Warning: As per the official spoiler policy, the following discussion may contain unmarked spoilers for up to the current chapter of the Methods of Rationality. Proceed at your own risk.
Assume HPMOR was written by a super-intelligence implementing the CEV of Eliezer Yudkowsky and assorted literary critics. What would it have written differently?
... is what I want to know, but that's hard to answer. So here's an easier question:
In what ways do you think Eliezer's characterisations/world-building/plot-fu are sub-optimal? <optional> How could they be made less sub-optimal? </optional>
(My own ideas are in the comments.)
To put it another way... Assume a group of intrepid fanfic writers in the late 2020s are planning to write a reboot. What parts of Eliezer's story do you think they should tweak?
And just to make sure we're all on the same page: Eliezer isn't going to go back and change anything he's written to bring it in line with anything suggested here. This is purely an "Ah, just consider the possibilities!" thread.
... which means that we can safely suggest drastic rewrites encompassing 30 chapters or something. Or change fundamental facts about the world.
(Exercise due restraint on this one. Getting rid of the Ministry/the Noble Houses/blood purism would probably turn the story into something completely different; this isn't what we're trying to do here.)
With that, let the nit-picking begin!!
Things that I would like to see coming along with the MoRverse:
Snippets of the world-as-it-is outside of Harry's story, like Alicorn's "Flashes" after Radiance. In particular, I'd really like to see more of Cedric Diggory, Draco and Luna's childhoods, the Weasley twins' first years, and the Marauders adventures as history, as well as redeemed Slytherin house and technical magical research after real engineers get their hands on it.
These could also make the Self-Awareness arc a bit less weird by personifying the bullying infrastructure.
I like the way Eliezer handles dementors as a metaphor for death, but as I consider Rowling's intentions for them as metaphors for depression, I'm realizing that that might be even more beautiful, even if Eliezer doesn't have as much to say about it.
For me, thinking of the Dementors as death AND depression is a lot of fun--the idea that they're of the same essence is very cool to toss around. Which in turn makes the question of what patronuses are more tangled and intriguing...
Really, every attempt I make at reconciling the two worlds makes every facet of both more interesting! :)