Hyman was once a center, but he has not been for a while I do not think. Right now I think he could be a Komarov type center. Could step in for a draw if the guy gets kicked out, and is the guy who takes draws on the PK (since most likely he'll be put with someone like Brown or Kapanen who would be far worse at taking draws), but not good enough to be a full time center.
All of the Leafs PKing forwards take draws. Last year it was generally Komarov (L) with Hyman (R) as the top PK unit with whoever was strong side taking the draw, and then Kapanen (L) with Brown (R), again with whoever was strong side taking the draw.
If things stay the same as last year, then the loss of Komarov means that another lefty is needed. Johnsson is L and so is Lindholm. I think it is likely that Kapanen moves to the top unit with Hyman which would be a great pairing for speed.
Worrying about whether a player is good at faceoffs seems to have minimal value for penalty killing. (and players are better on their strong side, so it is common that two inferior players at faceoffs who are both only taking strong side draws will have a better winning percentage than one superior player at faceoffs who is taking both strong side and weak side draws.)
If you put out a Center who was 55% on draws instead of putting out a player who is a better penalty killer but only 45% on the draws what have you gained?
In the first situation 11 times out of 20 the puck is hopefully dumped down the ice and you have killed 10, maybe 15 seconds, but then you are still killing a long chunk of penalty with the inferior penalty killer. The other 9 times out of 20 you lost the draw and are killing from the start with the inferior penalty killer.
In the second situation 9 times out of 20 the puck is hopefully dumped down the ice and you have killed 10, maybe 15 seconds, but now you are killing that long chunk of penalty with the better penalty killer. The other 11 times out of 20 you lost the draw and are killing from the start with the better penalty killer.
So in first situation for every 20 faceoffs on the PK, you have gained 20 or 30 seconds total of the puck being dumped down the ice off the draw, but for the other 15 - 20 minutes you have an inferior penalty killer on the ice. That is worse.