If Lombardi is healthy i wouldn't hate a third line of:
Kulemin - McClement - Lombardi.
Kule as the forechecker and first guy in their zone, and Lombo as the support man. Carlyle uses small speedy guys well and i dont think Lombardi will be demoted UNLESS they are stuck with that as the only option. Right now i dont think they plan on sending him down.
Maybe i'm wrong but i really think Carlyle will be ok with having him with the Leafs.
I like the idea of Lombardi on the 4th line(if he's playing on the Leafs) over the 3rd line. Obviously he has wheels which would help of course on any line, but b/c he ABSOLUTELY REFUSES to drive the net I think he's better suited for the 4th.