I hate to break it to you champ, but 16 points in 37 games is bad 5v5 production for a prospect defender too. There's no way to shine that up.
McCabe was good offensively in the NCAA. Tanev I'm not going to get into much because I don't feel like breaking out my OPJHL NHLe formula, but he was an offensive producer in Jr A tier 2, and the shitty NCAA conference he played in.
I will say this though, here's the guys on the all D, no O club (let's say 20+ mpg, and 30 or fewer points/82...and I'm omitting guys who have been regular 30+ point scorers in the past. I've highlights the guys who played in the CHL and put their D+1 & D+2 PPG next to them.
Esa Lindell
York
Edvinsson
McCabe
Bahl .50, .57
Samberg
Demelo .40, .70
Pettersson
Larsson
Vlasic
Ferraro
Zadorov .83
Chiarot .31, .58
Roy
Anderson
McNabb .89, 1.22
Schneider 1.22
Whitecloud
Mikkola
Brodin
Pesce
Chatfield (Undr) .35, .54
So that's more or less what we're hoping Dernferd turns into. One of those guys. Welp, among that CHL group, he would be at .41ppg so just ahead of Chiarot, De Melo, and Chatfield, and his D+2 total of .44 is a pretty distant last. That doesn't mean he can't do it, but yeah. What it does mean though, is expecting him to do it at 20 next year is probably mental. Aside from the few lottery picks on the list, these guys didn't arrive as top 4 defenders on non tank teams until they were 22-23.