Wigan's reserves have gone unbeaten in their last two seasons and have some very talented young players. Because of their youth they are some way off first team rugby.
I'd imagine Wigan's idea is to give some of these players the opportunity to play against men at a far higher level than the reserve League provides.
Whilst Hill has played SL games another young prop in Makin hasn't. He's very good.
As has been mentioned Wigan have plenty of "middles" and the younger players could spend some time with Trinity.
The co operation between the two clubs could mean that Ellis and Powell come to Robin Park to see the Training and S & C facilities. Ellis might consider having a look with a view to investing in that side of his club with Powell's advice on that sort of thing.
You have a new owner in Ellis and Wigan's new owner takes over 1st December. I'm sure both men would not be doing this if both did not think is was in their own club's best interests.