Okay, so, first off I agree with Sparkle's take regarding the Itachi thing. But it's such a small, relatively inconsequential thing overall, so whatever.
Secondly, great job overall. You did a whole lot more than I expected you to lol. Major props for improving his P&A section. Massive W from you. The descriptions in the P&A section are generally really good, but question. Would you mind adding references (and possibly scans as well) to it? Technically, you don't have to since you didn't need to revise the P&A section in the first place, but it would be the cherry on top. And nowadays, it's kinda the new standard to add references and scans to stuff when possible. It's totally fine if you can't, though. I'll get to it eventually.
Other than that, I guess the only things I'd improve regarding the P&A section would be adding the general Ice resistance that everyone should have, among a few accepted basic Ninja stuff that I recently got accepted. I can add them to the sandbox if you'd like.
Also, maybe a description for his Enhanced Senses. I think him being a Silent Killing user is the reason he has it. And also probably being able to navigate his underground movement.
Finally,
Both of these should be merged into his Supernatural Willpower justification. Some of it can also go on his Stamina justification.
As for the AP section, it's largely good. You already know I disagree with the Itachi bit. Other than that, I guess I have a couple of minor suggestions.
I think the "physically" should be removed, as he kinda Varies in general based on the chakra he absorbs. His Jutsu also benefit from the absorbed chakra, so it should just be "Varies with Chakra absorption". Also, I'd like to expand upon the varies justification slightly if that's cool with you. Nothing major, just adding a scan and reference for it.
Finally,
This should be "up to Island level".
That's about it. Again, great job overall. My gripes are very, very minor.