For me if there are certain shades like yellow on yellow, bright reds, bright yellow greens, oranges I experience sensory overload white on yellow like in mt gulg is especially painful and I know I will have some trouble within the fire bird fight for this tier of 8 man raids. Usually if I get use to the sounds of a fight I can close my eyes and just memorize certain things, but it would be really nice for them to be an option for this especially if they are going to crack down on even entertaining the idea for installing an 'evil' plug in. Not to mention there might not even be audio queue's like leviathans water spout to go off of in some fights. Simple things like bigger cooldown counters, with adjustable colors. A black and white mode. Currently I could adjust my monitor to do this but I would have to do readjust it every time I am playing final fantasy and than turn it back after, and adjusting my monitor colors is already a pain in butt. I just deal with the sensory overload and hope I don't die or let my team down due to a dumb issue I have. I have sun glasses that adjust light spectrums, but wearing those while in a dark room with a monitor is way different than wearing them outside for the sun or bright lights.
I don't mean to be a big jerk to the dev team, but if they are going to crack down and promise they will implement some things into the game later they need to be more specific. I want to know what they will add, if they will add certain things, and if they don't want to do it ask for the communities help, verify plug in's, test them, and go from there. Currently the only way to suggest something to the devs is in game or on the forums (if they even read this one). I know suggestions I have made have never been talked about and highly doubt they look at all of them or plan to add anything similar to possible requests made for accessibility.