The problem with that, if long amount of time is needed. Why was it announced in the first place, now? You'd wait till you were nearly done. Also, the game should of been in delveopment when the first devkits of the PS4 were first released. Not two years in. This is not a new game. The idea doesn't have to pop in someones head. And then planned out over a few years. They intended to sell it in pieces, from the get go. They didn't just go: "Oh hey, this game is gonna take 5-6 years. Let's announce it now. Oh, wait we still have 4 years left to do. Let's break it up." That would be the stupidest director for a company ever. Things don't just happen at a company that's been making games for 20 years. They know the time needed for games to be completed. They built that experience up.