Yes, I don't dispute most of that, other than I think both Morrison and Burr had some part of their game that was outstanding in some regard
Morrison was a terrific skater, defensively and a very very good playmaker. Not elite but had 2nd line playmaking skills, and then when placed with Nazzy and Bert, found a role.
Burrows at his prime was still quite a good skater, and tenacious as hell, that skill to forecheck, work the boards come out with the puck was elite (thus the reason he meshed so well with the twins and similar to what we see with hansen).
I just don't see any real 'standout' part of Gaunce's game. That is the issue. Solid all around but those types of players do tend to have challenges transitioning to the NHL unless they learn to use their size and bang and crash (Think Taylor Pyatt - never really did much, was an ok player but didn't really standout in any aspect of his game). This is why I think he's really suited for a defensive center/ checking role. He'll never be a hitter, he never was in junior and was a mid skilled guy (not elite, just solid). He's effectively a ''tweener' with size but smart.
So if he builds up his skating ability, can focus his attention on becoming a great faceoff man, and can learn to use his size (not so much to hit but to play heavy hard minutes and make it hard on opposing centers to get ice and get to the net), well his smarts and defensive skills will make him a valuable part of the organization.
Add in the ability to learn from a guy who made is career out of playing defensively like Jarvis, and hopefully another in Manny and we already have Ryan Johnson in our group, the coaching is there to turn him into a great defensive player if he can mold his game that way.
Again, not saying he can't surprise, players do, but based on what I have seen of his game in junior (which I saw alot of) the AHL and his natural athletic abilities, that's the role that's most likely in my view. One thing to remember, as a top 2 center, you really do have to have the ability to drive the play offensively - you need to be able to distribute the puck, even if you are not the 'scorer' and the finisher, the key is always to be the guy making your linemates better. I don't see that with Gaunce and you allude to it.
I don't think you want a guy who isn't great at distributing the puck and isn't a great skater as a 2c. We saw how that inability hindered Kesler and still does to a degree, however his skating and tenacity and elite defensive ability made up for it. Gaunce doesn't have that skating, and yet sn't an elite distributer either and is only 'solid' defensively. He really is a 3/4c in my view