Have to say, I like what Ducks are doing with Leo Carlsson. They're going to sit him occasionally, and with Carlsson it sounds like they're doing that because he's never played 82 games before.
I don't think that's an issue with Poitras, as Dom pointed out, he's used to playing tons of games, but where I think getting him on a regular schedule would be helpful, but the one thing he won't be able to develop playing every day is his strength. NHL players lose weight/muscle during the season because there's no time to work out as hard as you'd need to, to build mass. I think it would be really interesting to take a developmental approach with a young player, and have a schedule that requires him to take every Monday off so he can work on building strength and explosiveness on Sundays and recover on Mondays.
He'd get the benefits of playing and developing his game in the NHL, and the benefits of a schedule that affords you time to build NHL size and explosiveness.