Mumbling dialogue. Rampant over the last decade or more.
The vocal fry stage whisper. Literally no one talks that way in real life and you're not on stage. Speak normally you ham imbecile. Yes, you, Tom Hardy.
Inadequate lighting. It doesn't set the mood, it just looks like the lighting crew are off sick.
Ridiculous colour filtering. Just stop it. At least the fad for blue-grey seems to be receding.
Absurd action sequences in films that aren't quasi-comedies (ie James Bond, anything with Jason Statham and similar).
I think The Revenant offends on all of those counts.