I agree with you about the need for effective accessibility solutions, especially as they apply to color vision.

I have a graded disagreement with this specific part of your post though:
Quote Originally Posted by Aregin View Post
We are in desperate need of [...] options for the removal of boss effects like raid wide AOEs. We can remove our own and other players effects, so why can't we remove simple raid wides like the cascade cast in Phase 1 of TEA.
It would be fine to allow people to reduce the level of effects, for example excluding overlays like snow storms and full-screen flames. However, there is a minimum amount of enemy bfx that should not be allowed to be turned off because (1) if you let people turn all enemy effects off, there will be some players who turn them all off and then get hit by things they should not get hit by because they never received the visual feedback to inform them what the shape and size of the attack was and (2) this would have an adverse impact on everyone who plays with those players. Therefore, to protect other players, who did not have a say in the matter, from having to deal with avoidable mistakes that people would make from setting enemy effects to None, enemy effects should only be allowed to be set as low as Limited/Simple.