For a long time I took armor design for granted. I just assumed it wasn't a difficult process and a simple one that every game eventually went through. After doing some digging, it appears that information on old armors is few and far between. In all likelihood, the armors we've seen in FFXI and FFXIV were created based only on paltry descriptions of old, worn, and functionally useless relics. Knowing this has given me a new appreciation for the work that's gone into design and creation of the armor and clothing we've seen thus far.
With the inevitable level cap raises, I can't wait for what armors we'll see in the future.