I still think we lack that so called "x-factor" in and around the ruck.
With reduced interchange and tiring forwards, speedy halves and hookers are going to be dangerous for opposing defences. Guys like Milford, Segeyaro, the Nikorima brothers, Damien Cook, Matt Parcell even a guy like Ben Barba will wreak havoc late in games.
Benji in his younger days could have played this role, but as a half plays a different role now. We don't have anyone really that can play this role (except maybe Quinlan?)
This is probably our biggest weakness.
Keep in mind that Rein still has a solid running game. If he is around in the last 10-15 minds of each game, there'll be opportunities for him. Likewise, Havili. I'm also hoping that Mann comes with some good awareness and support play, seems to have the speed and agility to create.
And don't discount the damage that Friz and Dugan will do on the right edge.