I'm not the worlds biggest fan of the crossfit football stuff.
Ah yes I've seen these threads before, really good info. I think rugby has a very unique metabolic demand, it's not a case of training like you would for football and throwing in a long distance run occasionally. It's more about power endurance, mainly from sprinting and tackling/pushing. I'm a big fan of Ross Enamaits work, that style of endurance conditioning is what i'm after, only with more sprint work. The KB stuff is basically to bridge the gap between the gym and the field. The gym stuff is to predominantly train the CNS with big bang for the buck deadlifts.
I don't think i'm reinventing the wheel here, just applying a good set of training styles which I think gel well together.