Maybe, but if they were going to make a difference they probably would have already played. If any young player is going to make an impact, for mine it's Leilua who has already played and actually has skill. Mann is probably the only other move we can make and it's a marginal one at best. The title may be called that but the OP is asking about how do we change things up and also try to make an impact in the finals. Adding speed isn't going to do anything unless it's associated with big, strong athletes that we don't have. The best move we can do is to add ball players to help the halves. Mann at fullback and Leilua as a ball playing forward are the moves to make that might make more of a difference than adding Dufty to the mix.