I haven't seen this mentioned yet. All we see on the minimap in a party is a whole mess of generic blue dots. If we could change the color of the leader of the group it would make things a lot easier in quests and especially in raids.
Another thing that can be done is to change the color of the character name over the heads as well, that way you don't have to dart your eyes over to the minimap in the middle of a heated battle. I'm thinking for both of these a bright green would be ideal. Any thoughts?