Love the new vocalizations. In campaign they feel great like your actively engaging an assortment of different enemies throughout.
That said, having run monos over the past couple of days as well, when you get an entirely level covered in them, the number of wilhelm screams going off and the amount of grunts and groans can be a bit much.
Maybe cut back on their vocalizations in monos by about 1/3 less often? Just a ball park number but it definitely needs to be dialed back a bit. Don’t get rid of them though, because I like the new sounds!