Going off of Trotz' PP units last season, I highly doubt that is going to happen.
He used Carlson on the first PP unit last season and Niskanen and Orlov on the second PP unit, so basically their three best all-around defensemen.
I think this team's three best all-around defenseman are Boychuk, Leddy, and Pulock. Now, I can see them keeping Boychuk off the powerplay to keep his minutes down, which would probably lead to Hickey sliding onto that 2nd unit (unless Aho/Toews) make the team out of camp.
I don't see Trotz putting a fourth forward like Ho-Sang on that second unit, he's just too conservative for that. Anyway, this is what I can see happening.
First PP:
Bailey
Barzal
Beauvillier
Lee
Pulock
Beauvillier and Pulock for Tavares and Leddy and honestly I'm not sure that unit takes a large dip in production. There's definitely a dropoff in skill from Tavares to Beauvillier, but personally I liked Bailey better on that right dot than Tavares and Beauvillier in the high slot shoots first and asks questions later whereas Tavares used to look for the perfect shot. For me, Pulock is a clear upgrade on Leddy, so I think everyones fits better than how they fitted last year.
Second PP:
Eberle
Hickey
Ho-Sang/Kovar
Leddy
Nelson
Ultimately, there's going to be a lot of trial and error with that second PP unit because I can see Trotz giving Filppula, Komarov, and Ladd looks as well.