I watched it once about 4 years back with my cousins, don't know who played, mainly watched it because it had been mentioned in American sitcoms and also figured it would be kind of like the Olympics in that hype, cost and spectacle overshadows the dull, dull sporting events.
It didn't.
Seemed a little like Rugby, but where people stopped for a chat, a hug and some homoerotic grab arse after each tackle, which was greatly facilitated by the skintight lyra pants. Honestly, I don't think the additions helped much, seemed to draw everything out, also the refs never seemed to call the blatant forward passing being done by the dummy half.
I would give it a C- or so I guess.