I really see Genoway as a 1 for 1 replacement of Marvin. Both are F/D combos but Genoway can play Center, where Marvin, I believe plays Wing when he is up front. Unless he lights it up like older bro, I expect Chay to have about the same impact as Marvin on this team.
What concerns me more than Genoway is Marto's size. Sure, 6' is a good height but 160 is just plain LIGHT for that height. I'm no expert when it comes to size to success, but I really think that Marto's weight is a concern.
As for forwards coming in, I really like what Vande is going to do for us. Size and skill, maybe not the best skater. I just hope that McKeen's scout was off when he said Forney was "defensively lacking."