Oh, I believe you wanted to replace parry. Extra content they can add all they want for both sides, anything is welcomed.
Then again you will probably need to look at rebalancing if you also add a roll on top of parry. Now you can quick parry and dodge as you pump the predator up with bullets.
Now if you’re the last one out and the predator is on you, you’re dead meat, roll or no roll assuming the predator knows how to play.