It would be nice if we could have personal raid markers. These would be invisible to other players and only show up on our own mini maps. (i.e. a 1/2/3 to go with the A/B/C).
Sometimes there are extra mechanics that maybe one person feels they struggle with but the main raid markers are used for important things that benefit everyone. One example I can think of is when the group has to separate for AoEs in Thordan EX. In the heat of battle a person might feel lost but if they can look at their mini map and see the 1/2/3 they themselves placed they immediately can feel safe in knowing where they need to run to not kill anyone else. (Same for when Shiva EX first came out).
Quality of life at best but it would help a lot if the time and resources could be spared. Please notice me, senpai D: