Unfortunately if you are the boss you have to work with a team you are comfortable with, there is too much on the line to go with the team that was good for the last manager.
Giggs needs to be his own man with his own team, when he fails it needs to be on his terms, and he doesn't need a group of people around him saying, Chris didnt do it like this, or Chris did this.
As much as i dislike Giggs, he needs to do this.