I think the first "half" (maybe slightly less than that) he was still being eased in verrrrry slowly (too slowly) and didn't have the confidence of Coach Hynes. You can almost throw that half season away. A lot of our young players were somewhat disadvantaged by Hynes at first, and Glass as certainly in that group. Hynes held young players to a different standard, and they had to walk on eggshells around him to get icetime.
Gradually, he got more of a look, and gradually he started to be recognized as a legitimate option as a regular scoring-line center. I thought he looked best with Duchene on his wing, out of all our centers. He definitely is a bit deferential, and that's right up Duchene's alley because Duchene wants to run the show. So they had good chemistry. I don't know what the exact breakdown of points/minutes was, but regardless of that, I think from that result in the 2nd half, Glass confirmed he's "legit".
Longer term... I'm still not sold on Glass. He's still a bit too tentative and uninvolved sometimes for me. He is a good pass-first center on offense, but I haven't really seen him take charge the way I'd like from a top-2 center. He does his thing, makes his play, and then kind of ducks away? Maybe if he gets a firm role and confidence from the coach right from Day 1, that won't be the same. He has the size, skill, talent you'd want. But Novak outproduced him, and I really like the compete and full-ice game of Parssinen better.
Trotz really seems to want to acquire a more experienced center also. I don't know how he'll make out with that. Parssinen-Glass-Novak-Johansen-Sissons are our options at C. I would nominally default to just rolling Glass back out there on a scoring line with Duchene and seeing how it goes. But who knows, I don't think anything is "set in stone" for us at that position yet for the coming season.
I don't think Glass is "safe" for more than 50 pts anyway, from the fantasy perspective. But there are large error bars both directions.