I'd be shocked if MB decided to "stand pat." He looked incredibly frustrated during the playoffs and obviously saw the Canadiens are missing a couple pieces.
I expect a couple trades and a couple signings.
As for the hole on D... gotta bring somebody in. Emelin being out for the first half dictates the need for another body. Tinordi is ready to be the 5 or 6 guy right now, so add a 3 or 4 to replace Emelin and gain depth when he is back.
I could see potential targets being D.Murray (Pitt) or R.Hainsey(Winn) for D. I wouldn't mind going after Franson (Tor) who is a RFA...