I bought a 2016 F150 XLT 4x4 with the 2.7 Ecoboost back in April. I absolutely love it.
My MPG is more than advertised. The ride is phenomenal. Acceleration is the quickest(0-60) of any motor offered in the F150. I do agree that the auto-shutoff is a nuisance. You should be able to force it off or on and have it stay that way.
I really like the interior. Sync3 is awesome. The ride is extremely quiet.