Ok, so I have had some time to reflect on this, the whole time leading up to the reveal I was hoping that he wouldn't be Khan. I wanted the writers to do their own thing. But I was ok with Benedict being Khan, but then in the last 3rd of the movie the writers took a wrong turn.
Again I say, I loved the 2009 movie, the franchise needed to be reset. So then the writers should embrace this freedom and do their own thing. But instead they find themselves re-doing scenes from previous movies (Did they really think the new scenes could top the old ones?) even to the point of recycling dialogue from previous trek films.