This is pretty much how the team will look like come October. Nice job.

Rosen or Borgman might push for Marincin spot.and I wish Kapanen got to play.

Looks like this could be the starting lineup. Leafs looking good!
Might see Kappy on Marlies until he can get playing time and we might see an 8th d man, possibly Dermott would get a shot ahead of Marincin to start the year..

IMO will be Leivo instead of Kapanen, Leivo has to clear waivers and last year shown can produce even long time scratched or injured, and Kapanen better play games with Marlies and be called up if required as he can be sent down without going through waivers.
Regarding D, we shouldn't be surprised if Polak gets invited to camp, if he is healthy and Marchenko doesn't convince Babs, he could be traded for peanuts to give room for 1yr contract to Polak. If someone like Dermott makes team taking Marincin spot, then worry would be pairings for PK (remember Hunwick and Polak were 1-2 in TOI PK last year and both are gone now), Reilly- Zaitsev and Marincin - Hainsey would make sense, if Marincin is out then I don't know, Gardiner and Carrick haven't played PK and a rookie wouldn't be thrown there.
I think this is a weakness on roster and why I wouldn't be surprised to see Polak back, also Carrick seems to be running out of favor.