So much wrong with that.
First of all, remember 1999? One try conceded in the whole world cup? You think that happened because we played attacking freaks who couldn't tackle? No, Horan and Herbert were almost as good defensively as they were in attack. It goes both ways.
RE Fainga'a, he did play for the Reds...in the centres....they weren't half bad at attacking, right? He may not be Spencer-esque, but he knows his limitations, and how to avoid choking the backline, to give the strike runners a platform to work from. If EVERYONE tries the miracle run, then its headless chook type stuff.
RE taking the fight to them: Surely that also includes smashing seven shades of shite out of whoever comes near you, and making them hurt for every metre? Otherwise you're just a pansy, and you're not taking the fight to them, you're just saying "i'm only good at this, so thats all i'm going to do, I wont bother trying to take the fight to you in ALL areas, even my weakest areas"