The wizengamot isnt remotely like any extant political institution at all. The line of Merlin is reminicient of the 5 good emperors of imperial rome more than anything else, and the wizengamot itself is both largely hereditary and scarily unlimited by either law or custom. Politicians going into a frenzy of popular rage? That is a paralel. Other than that, not seeing it so much.
Lavode
Most of the proposed plans have the same flaw: They require Harry to act not merely as a precocious child, but as a full on dark lord. This is /not clever/ because the obvious conclusion to draw is that he is either someones puppet or an outright case of bodysnatching. Either invites people who are otherwise potential allies to Adavra him on sight and provides political cover for those who would be his enemy regardless if they choose to kill him. Harrys dark side reasoning might not care about this, of course, but still let us consider options that dont leave Harry as public Enemy Number One, shall we?
Comedic conspiracy: Timeturner back six hours, contact malfoy and have him exfiltrate the manor, visit Hermonie (like the guards are going to say no to this?) Marry Hermonie to Draco. Now the blooddebt is an internal house of Malfoy matter, which takes it out of the wizengamots hands. Dont think this is it, simply because I dont think Harrys dark side has a perverse enough sense of humor to come up with this.
Snape: Downed a philthre of felix last night and rescued Hermonie preemptively—they are about to send a simulacra to azkaban. Too Deux-ex-Machina at this point.
Spill the beans on dementors and the true patronus, all the while acting like a kid who has had a bright insight. Have Hermonie demonstrate the true patronus. This makes Azkaban untenable in the medium term because eventually everyone will learn the truth, and the sets of “people people capable of the true patronus” and “Willing to be an azkaban guard” are.. Unlikely to overlap. This also forces the wizengamot to preserve Hermonies health and sanity as a weapon against the dementors. I like this one because it forces the next several moves of the wizengamot, and probably wont alienate everybody.
Break the line of Merlin, using partial transfiguration. This would almost certainly be seen as Merlin himself expressing extreme displeasure from beyond the grave.
Calling in the debts from the death of Voldemort night also work. Dont like this one too much, but not really sure why. Lacks.. elegance? It would be Harry trading on being the boy who lived, rather than on being clever.
Hmm. Any other options?
… That isnt actually a weakness in the plan, you know. He could stand up, explain the entire theory, slowly walk over to Hermonie, hand her his wand, and ask her to destroy the dementor as proof of her righteousness and disbelief would probably keep everyone (except Dumbledore. Note: Ask him to not intervene) from interfering right up until the point where she vaporizes the dementor. After which they would be unable to deny the truth of the theorem, and be fucked.
Point. Correction: It would eventually convince Lucius that Harry isnt pottermort once the implications have been worked out and someone else indepenantly verifies what the nessesary mindset is—likely by legimens on Hermonie. It still makes Harry and Herm indespensible right away.
Because there is no way Voldemort would be able to cast the true patronus. The nessesary mindset is much to altrusitic. Hmm. Since Hermonie could likely also master the true patronus, wrecking the animal form of the spell for everyone probably shields her from excessive punishment in general as well, at least until such time as a significant number of people other than her and Harry master it. The optimal version of this play is to have Hermonie destroy the dementor present´, but that requires enough time to prep H. Timeturner?
Step one: Stand up and loudly explain how a patronus works, and what a dementor actually is, under the guise of arguing for a diffrent punisment - This will make the entire wizengamot, including the aurors controling the dementor present incapable of casting expecto patronum. Destroy the dementor before it eats anyone. Now the wizengamot has to shut down azkaban (Because the secret would get out). This would not exactly endear him to anyone at all, but they cannot seriously retaliate, because they need him to kill off the dementors before they run out of aurors who havent heard the truth yet. This doesnt actually free Hermonie, just stops them from sending her (or anyone) to azkaban.
Side bonus Harry cannot predict: This would probably also convince Lucius that he isnt Pottermort.
Petunia (but she was explicitly altered somehow by her sister) and Hermonies parents. Hermonies parents are.. pretty much exactly what I would expect them to be, in either canon or MoR. I dont recall ever seeing them in canon however, so no baseline.
Eh, everyone we have seen be smarter is a wizard, and if the /entire world/ got smarter, that would have derailed history so hard even hogwarts ought to have noticed, so presumably the departure point is something that affected wizardry. The true words of madness being lost? Alternatively, someone coming up with a intelligence boosting potion or spell. Hmm. Lily was working on a way to permanently alter her sister, and she succeeded. If what she came up with was a way to.. I dunno, boost willpower, so that what actually happened is that she stuck with an exercise and diet regime in a way very few people actually do, then I could see the wizarding world dosing everybody and everything with it.. This is moving into wild ass guessing territory.
Hmm.. Actually, thinking about it, I think that the most likely outcome is that Hermonie will be rescued by someone other than HP. Rereading the last chapter, Harry made absolutely no headway on the case himself, but he does succeed in something else: Persuading a great number of other people that this senario screams “setup” to high heaven—the very first thing he does : Explain Hermonines predicament to Hermonine. - this presumably sets her quite considerable intellect in motion on the case. Second thing he does: Alert the most formidable teachers, including Snape and Dumbledore. Note that my current theory is that Snape considers himself her mysterious old wizard, and if he intends to put in motion a gambit to get her off, this explains why he burned the notes. He is cleaning up any evidence that documents that he is her ally so that whatever he pulls, people will not look in his direction.
Then Harry successfully poked bits of the student body out of herd thinking by the offensive use of sarcasm. And those students have parents and relatives, some of which are on the wizengamot.
Honestly, after that days work, the wizengamot meet is nigh-certain to turn into a gambit pileup.
That is the logical conclusion your sympathies incline you to. I suspect that what Snape sees in HP is at best a future Dumbledore, and quite possibly simply voldy V 2.0 Why the heck sign up for being manipulated and a pawn a third time? Uh-uh. But this may entirely explain what the heck he was/is doing with SPHEW. He picked Hermonie as the potential future ally least likely to stab him in the back when convenient, and SPHEW as the bet least dependant on a single individual. (Because it is an idea. The idea that everyone can stand up and do the right thing.)
Without telling anyone. Which is hilarious.
Eh, she is a first year at hogwarts—from their perspective, what is she going to do with it? Apparate out?