The problem with this is you change one thing, and that leads to changing another thing, and then another, and then another and then it essentially isn't the same product anymore --it's just something that happens to share the same name with the original project. Now am I saying things need to be same all the way around? No, I agree there needs to be some changes, but I really don't think Hollywood is the example we really want to follow. I'll say my example in a previous post again. If there is a game/movie/book/manga/comic you like and they announce an adaption for it, and leading up to that adaption's release everything is looking exactly like the original, and then once it's released it's totally different, are you really telling me you'd be happy with that product that only has maybe flimsy similarities to the original story? No one when seeing that their favorite thing is getting adapted into a different form of media thinks to themselves "Hey I hope they totally remove everything I liked about the original!" Hollywood is known for taking too many liberties in adapting things which is why they're generally reviled in many ways. Making a small change like having one character appear in a different place but still fulfill the same role is fine, but changing character personalities and shirking off parts of the plot stops being an adaption and starts to become a totally different story. Which, hey, if that's what the staff wants, they should announce that from the start --"This is a different story from the original, so keep that in mind" so people know what to expect, rather than dropping that bomb when they're already hyped.