Well on the plus side with this I do not see them going the DBZ route so it's whatever.
I'm gonna be frank, I'm not really that passionate about Naruto so the blow for me is just kind of eh whatever. NS is what drew me to this manga and I have read it but never kept up with it religiously.
So I can only imagine how this must feel for you guys that have actually kept up with it and been loyal to it since the beginning. The thing you have to do now and everybody else is know that you won't stand for this bullsh**. Let Kishi know how you feel about this.
Protest any future manga series written by Kishi, don't support it. Go out with your head held high and realize that ultimately Naruto was a manga that will forever go down as just another wannabee DBZ that didn't amount to nothing in the end except bad storytelling and recons galore.
In fact Naruto is already overshadowed by not only One Piece but also Hunter X Hunter. There are tons of better material out there then this overrated stuff. Naruto's always been overrated and this to me is proof of that.
I do not see this going to another project, Kishi's done with Naruto and he wants to move on to another manga series.
P.S Don't support the movie and let people know that as well. If NS has this big fanbase as many say they do in Japan then this movie is indeed gonna flop bc nobody wants NH/SS in Japan.