My viewpoint is essentially opposite yours, lolz.
I don't really think it's probable that Dumbledore will become the next Dark Lord. The only thing that has happened so far to suggest this is the one line by Dumbledore in Chapter 84 (there might be other evidence but it would help if you would explicitly point it out). And I suppose there's an argument to be made that Voldemort couldn't have "marked Harry as an equal" since Harry was a baby who Voldemort expected to easily kill (which is why Voldemort didn't bring reinforcements). And there's probably some people on here who think Narcissa was burned alive (but I am almost certain that Dumbledore faked her death and that she is living in a secret OOTP base somewhere).
But I think the counter evidence is stronger. It's too late in the story to suddenly change the villain, and Dumbledore probably wouldn't have the opportunity or motive to cause mass death. Those points seem simpler and like stronger arguments than the above. Consider that, in canon, Voldemort attacking a baby was apparently enough to mark Harry as an equal. Also consider that Dumbledore was completely hysterical when he mentioned the possibility that he would become the next Dark Lord.
It would help if we actually knew what some of the unheard prophecies say. Maybe Dumbledore was misinterpreting one of them, and he doesn't have to be a Dark Lord at all, but Harry would still fight him. That's not a great solution and it's actually less probable than anything above, but it does represent a kind of middle ground based on details and possibilities not yet made known to us.
And, I actually like the idea of Dumbledore being a Dark Lord who was corrupted by his power. I really don't think it would be sad, because I'm not attached to canon Dumbledore very much. I actually don't really care about any of the Canon!Harry Potter main characters, I just realized that. I only care about the minor characters, and thus far HPMOR has only improved those characters.
Dumbledore as Dark Lord just would be really cool. Maybe the rule of cool will outweigh my above probability based assessments, and he'll end up being a Dark Lord. I hope so, at least, unless EY figures out something even cooler to do.
(there might be other evidence but it would help if you would explicitly point it out)
There's this, from chapter 80:
You would expect that chain of light to miss a step, sometime down through the centuries; that it would go astray at least once, and then never return. But it has not. The Line of Merlin continues, unbroken.
(Or so say those of Dumbledore's faction. Lord Malfoy would tell you otherwise. And in Asia they tell other tales entirely, which may not make Britain's version wrong.)
The next discussion thread is here.
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 84. The previous thread has passed 500 comments. Comment in the 14th thread until you read chapter 84.
There is now 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.)
The first 5 discussion threads are on the main page under the harry_potter tag. Threads 6 and on (including this one) are in the discussion section using its separate tag system. Also: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14.
As a reminder, it’s often useful to start your comment by indicating which chapter you are commenting on.
Spoiler Warning: this thread is full of spoilers. With few exceptions, spoilers for MOR and canon are fair game to post, without warning or rot13. More specifically: