Pass.
I like to watch my character fight. I don't want to see her blinking out of existence in the middle of combat to change her socks. It was foolishness in XI. It would be just as foolish here. It's one of the things that encouraged the obnoxious elitist attitudes that ruined that game for many, and I sure don't want to see it here.
For those touting strategy, where's the strategy in packing a whole stinking armory to every fight? For those saying it made you unique in FFXI - sure, you were just as unique as the other guy who had also packed the same stinking armory so they could get in the same TP burn party with the other 3 DD jobs (like you!) who are going to be doing the exact. same. thing.
I'd much rather see the other ideas mentioned in this thread. Set bonuses and class-specific (AKA Relic/Artifact) armors that are meant to be worn throughout the fight. And if that's not unique enough for the pro-swap lot, let them come in a dazzling array of colors.