In Halo Reach on 360, when you fired a shot you could buffer the next shot by releasing and holding the trigger so that it would instantly fire when the weapon cools down. (Which is how most weapons and vehicles have always worked in Halo)
In MCC it doesn’t do that, which makes firing the revenant feel awkward because you either end up pulling it too soon and nothing happens, have to watch the cool down bar and take your attention off your aim, or mash the trigger as fast as you can which is pretty distracting.
It’s a small gripe, but it has completely turned me off using one of my favorite Reach vehicles.