Kessel line AINEC. Leafs line will be overrated because Bozak and JVR are so good on the powerplay, that line gets caved in a ton(and Brown is a bit of a sieve) though they certainly have the talent on paper to deserve mention here so we'll see if they actually bring it.
The JVR-Bozak-Brown line has controlled 55% of the shot share since being put together in February, I'd hardly call that getting caved in.