That assumes a great deal of control over the design of the network. We don't know what steps Voldemort followed to design the Horcrux 2.0 ritual, but I don't think it implausible that the final result was the best he could do with the knowledge available, rather than the best an intelligent programmer could do with full control over the system's hardware and code.

If she does, she'll have to do it with only one arm.

There is an artifact that might suffice, the Pensieve. Voldemort might have prepared such an artifact with all his memories, and had Bellatrix and/or others ready to restore them to him by it if necessary.

But I grant the extreme difficulty Voldemort is likely to have having been transfigured into a ring. If necessary, Harry can always do with the ring what Voldemort did with the Horcruxes and ensure it is lost forever.

Quirrel was his fiance, not his parent.

I would say that the whole thing took about 3 hours (maybe more if the walk to the cemetery took a lot of time), so now that Harry used his last hour, he's about 3 hours before his past self gets the note. He has to occupy that time, and what better way than to try to free Dumbledore?

I don't mind him not succeeding - I already have my "as good as possible" ending.

"I wonder how difficult it would be to just make a list of all the top blood purists and kill them.

They'd tried exactly that during the French Revolution, more or less - make a list of all the enemies of Progress and remove everything above the neck..." -Harry's internal monologue, HPMOR Chapter 7

"Amusing, but that was not your first fleeting thought before you substituted something safer, less damaging. No, what you remembered was how you considered lining up all the blood purists and guillotining them. And now you are telling yourself you were not serious, but you were. If you could do it this very moment and no one would ever know, you would." -The Sorting Hat, HPMOR Chapter 10

Well...well I guess it wasn't technically a guillotine. And Harry didn't make a list himself. But Harry did do it, and set it up so no one would ever know.

Without any hesitation despite his wounds the Dark Lord jerked down and right through the air.

Something that could indicate trying to dodge, or consciousness leaving the body. It's not unreasonable for Voldie to think "I've lost here, no matter what I do this body will be unusable in the near future, in case he has a plan to incapacitate me without triggering my Horcrux wards I'd better go someplace else".

All in all I'd assign a high subjective probability to Voldie's spirit being intact. Voldemort is a thorough planner, so total Oblivation is something he must have foreseen. And even if he did not, he is also known for not taking risks even when other people would be certain their precautions were enough. For example, he went through the trouble of resurrecting Hermione AND having Harry swear an Unbreakable Vow before attempting to kill him. Therefore, seeing something in his plan going terribly awry, there is a very high probability Voldemort would just retreat to a safe haven like the Horcrux Network.

Hypothesis: this has already happened. Voldemort has an implanted memory of exactly how he failed to kill baby Harry.

I am glad to see that Stuporfy did the trick, and I did not see the Obliviate coming. My private (i.e. I would have posted it if I had more time/attention for HPMOR over the last two days and had vetted it) way to solve the Voldemort Problem would have been to time-turn him the violent way by shattering Harry's Time-Turner on him; but looking into it now it turns out I misremembered the scene of canon I was thinking of. (The shelf containing the Time-Turners gets bumped, and they all fall off, turning them- causing them to go back in time and fall again; I thought I remembered someone getting trapped in it. Perhaps that was an embellishment in the movie?)

I am not sure Harry has thought through what will happen to Voldemort. Will he be imprisoned? Killed? It seems like getting the person most likely to imprison him someplace other than Azkaban to be first on the scene is a better idea than just causing an explosion to attract interest.

But now Hermione gets to be The Girl Who Lived Again.

Interesting. I wonder ifHarry just killed Sirius. I suppose that's not exactly the most important thing from a shut-up-and-multiply perspective, but it might also explain an additional reason why Harry avoids looking (and finding information about) something he may change later with the use of a time turner.

Also, no reference to a certain pack of cards yet.