If Harrison is out of the line-up and Bellemore (or even Murphy) is inserted into the line-up, I don't think it really improves anything. For years, the general consensus was that Harrison was fine as a bottom pairing guy, but unfortunately, the Canes had to use him in the top 4. Now the Canes are actually using him like they should.
He and Komi will have some hiccups along the way because if they didn't, then they wouldn't be bottom pairing guys. I'm fine with them as the bottom pairing for now. Give them ~20-25 shifts a night, ~13-14 min/game, mainly defensive zone starts and/or PK.