No argument from me but it doesn't go to my point that I thought was implied. You're not going to put Carlsson in that role for obvious reasons. Zegras and Mac are not as good defensively as Karlsson and I don't think this team has nearly enough wing depth to run three scoring lines.He put up 53 points last year. I'd be fine if McTavish were employed as a defensive specialist and scored 53 points per season with 17 minutes of TOI per night.
One of the top 3 centers needs to play wing. Vegas went from shallow down the middle to strong enough that they can rely on Karlsson to be a two way third line center with good minutes and good production on top of decent enough wing depth that Karlsson is hampered by playing that role. It's not the same scenario with the Ducks.