There is no way in hell Kim Jacinto stays for 10 issues. Drawing comics takes a lot of time - especially when you have such a detailed style as Jacinto has. Look at his characters. There are shadows, lines, veins, crosshatching and whatnot absolutely everywhere. Drawing that takes a long time. I'm afraid that we'll lose Jacinto by issue 4 or 5.
I also doubt that the Sentry family will stay around for long. It's probably just a small, little part of the Sentry World, which will either be in Sentrys mind or an alternate dimension. Look at Scout. He has both of his arms. The 616 version had his arm ripped off by the Void. In the worst case scenario those Sentry family pictures are just flashbacks, but in a perfect world, that would establish parts of "The Age of the Sentry" as canon. Everything in that story can't become canon due to major differences like for example Matt Murdock (Daredevil) not being a lawyer, but a comissioner instead.
In the Sentry scripts I wrote back in the day I had written it so, that "The Age of the Sentry" was canon, but that we only knew about it, because Sentry turned it into a comic book. So he put his own memories into the memories of Paul Jenkins, who wrote the Sentry comics. I mean, that's what we also saw in the comics. But the thing with memories is, that they don't really exist. When you remember something, your brain actually forms that memory again. That's also why remembering things keeps getting harder and harder as the years pass. You simply start forgetting how things actually really were and you remember things incorrectly / form them incorrectly. And with Sentrys constant mind wipes to protect the world from the Void, you would make "The Age of the Sentry" canon in general, but you could also explain why certain things are slightly off... Like for example Matt Murdock having the wrong profession.
Good post and agreed.