Sorry but no, collecting in an RPG is a essential part of the experience and having to pay for inventory space just cause the devs can`t come up with a simple solution for inventory space...
And is as a simple armory with a "collections" menu where you can keep all diferent armor and weapon sets can be allocated without using inventory space. Simple, doable, damn, most RPG have something like this and works like a charm. Why XIV can`t?