Mooy was in superb form for Brighton and Hove Albion in the 2-1 victory over the Gunners.
He was here, there and everywhere - spraying passes all over the ground in a man-of-the-match performance — and he capped an eye-catching evening with an assist that sealed victory at the Emirates.
Having a player of such vision, creativity and regularity at his disposition, Socceroos coach Graham Arnold might afford to give the man who amazingly was once deemed surplus to requirements at Western Sydney Wanderers a free rein, at least in the offensive side of things.
It is rather risky these days for any coach to let any player do his own thing and not expect him to track back and help out in regaining the ball. And few coaches would be prepared to do that.
But when you have a talent like Mooy who can provide constant and smooth service to the men around him and open up defences with 50-metre passes of surgical precision, maybe a more flexible role with a licence to thrill is a risk worth taking.
One way of circumventing a potential problem in midfield is for Arnold to give Mooy a limited defensive workload so he can be more free to keep the team ticking along nicely in his own way and at his own pace.
There are other players who are more than capable of assuming the defending or fetching duties.
Mooy, who is on loan to Brighton from Huddersfield Town, has earned a starting position with the Seagulls this season.
He may not be the quickest player going around but he makes up for this with a speed of thought and peripheral vision that have earned him rave reviews in England.
He has the ability to dictate the pace of a game - which is not easy - as he did against the Gunners.
The Socceroos' strong performances in qualifying has put them in the box seat to reach the next phase.
With two teams to go through, it would take a major form reversal for Australia and Jordan to miss out, bearing in mind that the remaining teams in the group are Kuwait, Nepal and Chinese Taipei.
The Socceroos have an opportunity to sharpen their game without the kind of pressure that accompanied the stuttering 2018 World Cup campaign which went down to the wire with a final playoff versus Honduras.
Arnold might not feel too inclined to rock the boat from a tactical perspective especially since he knows that Mooy will probably do the job for the team no matter what he's asked to do or where he's asked to play.
However with a couple of easy matches coming up next year, Arnold might want to have a look at a greater freedom for Mooy just to find out if it works better for the team.
Or, as former national coach Ange Postecoglou liked to put it, just to add another string to the bow.
Who knows, Arnold might discover that the pluses of a freer Mooy outweigh the minuses.
