Its interesting because he's pretty much the exact opposite of Jake. Jake drove play almost entirely by getting the puck and making things develop offensively with controlled exits/entries. He was never bad defensively, but that one gaffe per game (defensively) always seemed to stick out like a sore thumb. Recently, those gaffe's have become minimal- he's improved defensively to the point where he should be considered a #1 defenseman but isn't yet because of the baggage he's carrying and the Leafs trying to make Rielly the #1 d-man over the past few years.
Marincin's talents were almost entirely defensive... stopping the puck from entering the zone and doing it so well that his lack of offense was acceptable. Marincin's gaffes were almost always with the puck on his stick. He threw it away enough that you'd notice the gaffes with it that ended up in the back of the net. But both were effective.
The main problem with Marincin is developing puck skills, patience, etc is a whole lot harder than improving defensively like Jake did. Furthermore, the Leafs style of play (and where the NHL is going in general) fits in perfectly with Jake's game... and doesn't with Marincin's.
The only reason I'd keep Marincin around is I don't really want Rosen or Dermott sitting in the press box to be the 7th defenseman. If they aren't playing with the Leafs regularily, they should be playing big minutes with the Marlies.
