Overall I felt the whole second half was just anti-climatic. If it is true and there was suppose to be a third chapter that might explain why, but unless we get to see it, it does not matter.
Like you mentioned chapter 2 was mostly repeat missions and a few story missions in-between. It was almost like they should have just left it out completely and just gave us the "extreme" missions as something we could go back and do after we finished.
Yeah. I was like YES! I can play MGS again. Since I dont have a PS3/4 to get the ones on those. So when I knew about this it was like a god send. But with what they did to the game... I cant forgive them. The first chapter was like YES EPIC! Here is something I can only hope they do bring out the Chap 3 in a DLC. At least then it will be finished and complete. Probably wishfull thinking.