Just came out of the theater. Loved it, and it was a good ending. Though I was hoping for more of a Passing of the Torch than just killing off Luther and having more people join the team (all of whom were easy to guess at the end of Dead Reckoning). Though it could be that Ethan retires to keep the Entity safe from escape. Maybe it could have been a better ending had Ethan been killed (oh, they certainly played with expectations to that effect at the end) or physically disabled, maybe the imprisoned Entity could have been entrusted to the Donloes - who were great bzw - , maybe the Phelps reveal could have lead to him being more crucially involved in the finale, setting him up as new Team Leader.
In the end, they did it this way, and I am quite satisfied. Yeah, maybe Cruise's ego/adrenaline addiction kept him from put a definitive end to Ethan's story, but oh well.
The cast was great, the stakes were high, the action was thrilling, the story actually had more to say than most blockbusters.
I really appreciated that it was teased but not confirmed that Neely lost somebody close to her through the events of the first movie. And I loved the misdirect with Nick Offerman's character.