That first chapter was very depressing, Almost a turn off.
I’m glad I persisted to the ’return’ as it seems more light-hearted.

SUCH a relevation! Love this!

Harry is mending, but will Hermione? I wonder if all of the killing was what affected them and not being cast back in time with stains on the souls from the future?

I wonder what Hermione saw that she thought it was her parents? She got full of herself and got careless, but she did not come to the same harm Harry did to come back from his power trip. Though Hermione is screwed now because her identity is known.

Something has twisted Hermione up. Is it the book she has been reading, or did something happen that Harry is not aware of?

What the hell is Hermione playing at that she cast a spell on Harry which resulted in his hand being removed? Her lack of faith in him is really getting to be a problem

Ron is wrong, Harry will kill Snape.

Ron and Neville best stop using Harry's cloak without his permission because Harry will be pissed if they do something to lose it or damage it.

Well, Yaxley will be dead before a year it out.

I really think that Narcissa should have been done in too, then Draco would also have no parents to use as weapons against others...and he would have no access to any money.

Things have already diverged, so their future knowledge is only slightly usable.

So either one of the Slytherins attacked Harry's back, or it was Snape or Quirrell. Harry was foolish to let his guard down, but if it was a Slytherin then they will out themselves. A house full of Purebloods, whom are all without any kind of honor.

I love your story, love the direction you're taking it.

"The length of Polyjuice Potion effects were based on the quality of the brew"

According to Pottermore, yes. You really shouldn't believe any random bullshit you read there - especially when it doesn't make sense.

In HP&CoS Hermione unmistakably said:
"once we’ve drunk it, we’ll have exactly an hour before we change back"

Yes, "exactly" an hour. That's what the book said. And guess what? It was exactly an hour. Even if the info in that book had been wrong, what's the explanation for Hermione brewing the potion juuuuuuuuust right for exactly one hour - not a minute more or less?

Pottermore, like that Cursed Child crap, is the kind of bullshit that happens, when a successful creator cannot let go of their creation - or of the idea to milk it for even more money.
If you use info from there that was mostly probably made up as quickly as possible to get it filled up with something, and probably mostly not even by Rowling herself, then you risk looking like an idiot - same as with that Homonculous charm. If it was that simple to create such interactive maps, then the Marauders' greatest creation would have been the work of an afternoon and maybe a few days of patience. There wouldn't even have been any particular reason for special security measures like a password.
And why wouldn't everyone use those spells? But I've already pointed that out in an earlier review. The only logical conclusion is that this spell doesn't exist. It's complete bullshit.

And why the hell would Voldemort now use some countermeasure, when he didn't care to do so (or tell Barty jr. to do so) in canon in fourth year? Especially since Pettigrew knew that Harry had the Map.
None of this makes any sense. But who cares, as long as this bullshitting allows the author to effortlessly lead the story where he wants it to go, right?

So what exactly is the excuse for both Harry and Hermione forgetting the possibly most important takeaway from fourth year and just ignoring anyone who doesn't look suspicious, when you have an easy way to at least check people's identities? Can't be bothered to be anything but utter morons, as long as the author needs a convenient paper-thin excuse as to why Yaxley could so easily infiltrate Hogwarts, because the author still needs him there for some big whatever and until then the main characters cannot possibly be allowed to have any common sense whatsoever?
Plot armor is one thing, but this is just pathetic.