Customisable chat box would be really nice. I wish that you would be able to change text color and switch between solid and see through background. Personally i have slight color blindness, and if i don't use fixed i can't see any cc text, world boss information and almost everything is hard to read if the background isn't solid color. I think it wouldn't only help us with colorblindness, but everyone who would like to give their client a bit of personal touch.