It's essentially having another Draymond on the floor, but someone that has a legitimate scoring skillset.
He'd thrive where he isn't the #1 option, and has all the space in the world to run down hill.
You're getting that versatility on both ends, with him being able to defend multiple positions, providing help defense, handling the ball, running the PnR, and you're getting someone who gets his within the flow of the offense. Because the problem with Wiggins is, he gets his at the sacrifice of ball movement and the functionality of the offense; it's why despite him scoring 20+ points, his scoring doesn't really put the team in the best possible position of winning -- it has the opposite effect.
Pascal would be making the extra pass; Pascal would be making sure Steph/Klay are prioritized on offense; Pascal would be making sure he makes the right play. Lack of BBIQ was arguably the Warriors biggest issue last season because nobody was on the same wavelength as Steph and Draymond, well, adding Pascal would change all of that. You know how I kept harping on about how this squad needs players that fit their identity? Well, you'd be hard-pressed to find another player that fits that billing like Pascal does. I can't stress enough how he'd be the missing piece to the puzzle.