While giving people who were unable to partake in the game beyond grinding jobs and slaving to a dyna shell actual content they could do. For every guy whose e-peen shrivelled at seeing his homam set being less the cat's pajamas, you had more than just a handful of people who were enjoying the content and the life it breathed into the game.
Was it perfect? Not even close. Not with hate dynamics being entirely screwed over (the reason why PLD was in a tough spot during all of abyssea), the short-sightedness of the proc system, Yoshida's team (he was in charge during Abyssea) effectively ignoring several years' worth of discussion when they itemized that Red Mage empyrean set. and the needless inclusion of Primordial Brews.
As for the B-word, the concept of "balance" in XI has and will always be laughable. A game where you were doomed into healing if you so much as had an MP pool (and even the lack couldn't keep you safe, as COR made evident). The game where a single spell somehow managed to alter survivability for years to come. A game where, up until the two-hander update, you were worthless if you couldn't make good use of dual wield + a multi-hit weapon. Where unforeseen uses of mechanics/jobs were the order of the day and were allowed to run amok instead of being fixed. That just doesn't sound balanced to me.
I guess since I support jump I am also a frat-boy (thought I was too old for that) that plays call of duty and warcraft (RTS? Because I did play from Orcs & Humans all the way to The Frozen Throne). While I can't find a lalafell-sized baseball cap to wear on sideways, I will proceed to /bro-fist Modoru and Casker and be done with it. *nod*