Quote Originally Posted by AbrahmEden View Post
From my experience in texturing, each dye channel map would essentially be an additional map the size of the texture, which could lead to a dramatic increase in the texture memory consumption. There are techniques to mitigate this using nested maps, (where each map uses a different R/G/B/Alpha channel), but whether or not FFXIV's existing code and shaders can be made to work with this specifically for dye channels without a large amount of additional effort, I don't know.
Though i recall stumbling once upon a topic that contained information that the gear we have already have multiple dye channels by default (about 4+). But only 1 were accessible to us. Which wouldn't be too surprising seeing how various armours clearly have had multiple fields that the devs themselves have been tweaking both for player gear and npcs.