I love Flip as a coach. Some mixed results the last few years. Got rave reviews for his work with Wentz, including his near MVP season before he got hurt. Foles was SB MVP with him as Eagles QB coach. Went to the Vikings and got fired before the end of a year because Kirk Cousins was trash. Cousins has since played better without him, with fewer valleys. Foles got injured Week 1, but then got benched when he came back so Flip couldn't rekindle that magic. But he did get a decent year out of a 6th round rookie, Gardner Minshew. Mixed results in 1 season as Browns OC. Raiders QB coach with Jamarcus Russell, who famously gave his QB a blank DVD and told him to watch the plays on it to see which ones he liked, to which Russell got caught lying that he watched it.
Mitch is getting all the help he can ever want to succeed. New run game coordinator and OL coach to try to improve that area. New OC who is a former QB coach. New QB coach, who has called played. Keeps Ragone, who was the QB coach. And a head coach who is a former QB coach. My only concern is a "too many cooks in the kitchen" situation. These guys have all worked with each other, though not all together at the same time.