I think one of the biggest thing he gives you is direction. We've seen countless times where this team would blow leads or run out of gas right after taking a lead and then come up short.
With Gordon on the court, the offense no longer looks confused and lost when they need someone to give the ball to. Even when he's cold from the field, at least you have someone who will be aggressive and look to attack. We've seen countless times where no one knows what to do with the ball because everyone is looking for someone to do anything. This usually results in a turnover or a very poor possession with no rhythm or flow.
Gordon is an automatic spacer. Teams are less likely to sag off of him and will more than likely draw attention of multiple defenders and he takes pressure off our guard due to his ability to handle the ball. This opens up things for Vasquez and his production has improved along with his consistency.
Last but not least, he gives up the ability to close games. This is probably the single most important thing he adds. We are starting to win games we've lost in the past because of his ability to take over when we need it.