4C is a pretty irrelevant position on a team like this that is top heavy or in this case with RNH centering the 3rd line, top 9 heavy, so the 4th line isn't getting much burn. They could deploy the 3rd line from last years' playoffs as the 4th line in this playoffs and the Oilers will be fine. The major, glaring, hole is on one of Drai's wings or maybe both but need at least one. Even Frederic, as much as I like the player, is not a true 6 winger. They do have a guy in Arvidsson who is usually a true top 6 winger but he seems better suited for the softer minutes 3rd line role at this point so Drai is going to do A LOT of heavy lifting on that 2nd line but he's been doing that his whole career as a center so nothing new for him.