I just heard about this today: http://ffxi.allakhazam.com/story.html?story=20425
I've been really happy to see SE embracing customizable equipment in FFXI over the past year, and I think it bodes well for the same thing in XIV. Updates have grown so few and far between that that details have faded from my head, but I think there have been a few hints about a feature like this -- for instance, attaching "up to two blades" to a lantern shield as revealed this week.
I'm looking forward to seeing how far they could go with an equipment customization system built in from day one as opposed to added years later. This seems like a good way to add depth and purpose to the expanded crafting classes, too.