Reid showed his power in scoring his first on 68 minutes, finishing off a great break from Luke McGrath, and then rounded off the rout late on.
And speaking in an excited fashion of the youngster's attributes, O'Connor believes Reid's performances this season will make him an integral part of the side moving forward.
"I think his decision-making [against Treviso] and, again, his distribution were first class," O'Connor told The Score.
"He's very deceptive with the ball in his hands. He throws such lovely passes that it keeps the defence in two minds.
"He had a couple of opportunities to create outside him, and Drico (Brian O'Driscoll) is always going to commit defenders, so it was a good combination."
"He's a lot more comfortable at 12; he much prefers to be at 12. He probably doesn't kick the ball and communicate quite as well as he'd like as an out-and-out first choice 10.
"He's played brilliantly for us this year and he'll be involved moving forward for sure."
Guinness PRO12 Leinster News
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