I find this line of thinking awfully rich considering anime rips off each constantly. And that's just focusing on actual anime, when they're not ripping off Kurosawa or western films, of course.
I don't see them reusing the shelling sequence as ripping off. This film is the first western GITS production, and I don't see a problem with them paying homage to the original film, especially since they're using that and some episodes of SAC as a template for this movie.
There's homage and there's being artistically lazy. Based on the trailers, we know the opening sequence has been lifted, as has the swan dive attack sequence, as has the cloaked fight sequence. I think that's pushing it, but it goes beyond mere homage if there's more.
Anime ripping off other anime or other media doesn't make a big budget Hollywood picture ripping entire scenes any less creatively bankrupt. Though I may criticise it for its storytelling flaws, the Oshii movie was beautiful and distinct in its own way. Both visually and aurally. Yes, it used well worn genre tropes, but many of its scenes are instantly recognisable as its own, as is its soundtrack. Personally, I'd rather that the new film did its own thing: be something that people recognize as its own thing decades down the line, not let its defining scenes be virtually shot for shot rehashes of things that the first anime did, with the same soundtrack to boot.
So you're cool with Johansson in the role and the name change, right?
Thought someone might ask that. Not particularly, no. At least, not in the way it's been done, and I concede that this may seem hypocritical.
Changing characters in adaptations happens, and that can be because the filmmakers want to take a different slant on the core of the original story. In this case however, it seems pretty transparent that the casting and naming choices are down to whitewashing. There are no suitable, bankable Asian stars, or so the studios think, and that's unlikely to change unless they are actually prepared to cast young Asian talent over whitening the character. The studio know they're going to get heat over this or why else have they been so reluctant to reveal the name of the main character?
Whole new cast of characters? I'm fine with that. Using pretty much all of the existing characters except the lead mysteriously changes race to Caucasian? Yeah, that doesn't look so good.