But he wouldn't have the time and space to use those things as effectively now. Easier to look better when you do.
Clutch and grab notwithstanding, defenses and goalies have better awareness, skating and positioning now.
You may be not paying enough credit to McDavid's playmaking because he has to deal with that regularly, since his rookie year. You do the best you can with the situation you have.
Look:
Active NHL Players - Assists per Game Leaders
He's the best playmaker now by far, whether through passing or other means.