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.
You seem opposed to Dufty getting a shot and some highlight Mary doesn't have a skill set to help him.
The issue is Mc Fookknuckle is the coach for 2018/19 so there is an immediate roadblock for any of the potential young brigade coming through.
Surely the remainder of 2017 can be put to good use by Mary coming to grips with how to create a pathway and get these kids acclimatised to NRL and beginning the process of who we invest in and who we offload as not many will actually make it?
If he doesn't do it now and we again start 2018 with the so called tried and proved older players (who never get the actual job done of making us real contenders) and we meet with success for the first 10 rounds as we did this year and to a lesser extent 2016 / 2015 and it invariably goes pear shape and we again desperately try to cling onto making the 8 with a busted & semi unless line up as we are currently doing, we are just repeating the same old mediocre outcomes.
There comes a time in the life of everything when you have to throw caution to the wind in an effort to get out of the hole you're in and now is such a time.
