I think I'm comfortable with Lepisto and OD revolving in the 6th d-spot role.
Obviously with Campbell and Campoli leaving, we aren't nearly as strong on defense as we were in the past (this also depends on Leddy's progression, and how the new guys fit) but I do think we still have a solid group that is slotted in the correct locations. We've always had the luxury of Campbell in the #3 spot, a potential #1 d-man, also pushing the rest of our D-core down. Now we may not have that type of luxury, but we still have a group that is capable of playing at the level they are all slotted at.
Last year we had six top four defenseman IMO. Keith, Seabs, Campbell, Hammer, Leddy, Campoli... any of those guys can play top four on any team. We were spoiled.
Keith/Seabs
Leddy/Hammer
Montador/Lepisto
OD
That could potentially be a very good D-core.