I don't think Wane is responsible for much of that success to be honest. I think it's more a reflection of the work Michael Maguire did there to be honest. Wane has broken it apart somewhat and has singlehandedly cost them titles. Grand Final last year was a prime example, they could possibly have given Saints a game last year given our starting halves and yet he winds them up so tightly that it was only Mose scaring them from the kick off that stopped them all being sent off after the first tackle. Wane is too focused on physicality, aggression, recklessness and violence (His words). Wigan under him are built on a false platform. Hit high, get false numbers into the tackle, by that I mean having two or three additional tacklers join after the initial collision with the aim of injuring the ball carrier and slowing the play the ball down. They are still deliberately attacking knee joints and their discipline at the play the ball is an absolute farce, holding down when tackling and moving off the mark when in possession. Their whole gameplan can be undone not by a good opposition, but by a half decent refereeing performance.
If Maguire stayed, Wigan would have two more major trophies now. That's Wane's impact for me, he didn't build that side, he's slowly destroying it.
Wigan as a club however I do have more respect for. The youth system is the main reason they are still a force. Their youth system produces not only their strong first team, but half the teams in the league as well. Everyone benefits from it. If only we could get a few more teams up there with them (Saints and Leeds are now, but need to maintain it, not just have golden years every so often), we might win an international series every now and again. They can lose first team players and not even notice it, they can throw kids in for big games and they are as good as the internationals they've replaced.