That's not really very different from how it was in 1 and 2, and also in 3, to a lesser degree.
It also doesn't help at all that the guy playing is a total scrub that can't seem to hit the broad side of a barn (trying to hit airborne targets with a grenade launcher? really?) and endowed with the situational awareness of a deaf bat.
You might be right. Still, it doesn't feel like Bio has improved the combat. I don't know man. I was and still am quite disappointed by that gameplay.