Nevermind… the actual preview popped up on my YouTube a MINUTE after I posted this.
So she makes a shooting port…? Is she an attacker because while I GET the defensive use it still seems like you'd be giving the attackers a fair deal of benefit from this unless you're REALLY set up to defend the objective HARD. I'm watching some speculation videos but when I saw this initially I couldn't help but think "Well, nice gun maybe, but fuck that gadget".
An attack that tracks roamers and a defender that makes firing ports, maybe sends a large sheet of metal at head level towards people on the other side. Maybe Ubisoft is trying to fuck with the entire meta of the game's current team composition?