I think it might be kind of useful there were more colors and shapes used for representation of things in our radars.
things like:
party members- bright blue squares
dead party members - dark blue squares
enemies- red circles(still)
friendly NPC's- Green triangles
Portals/area entrances - swirly white thingies(still)
respawn points- yellow diamonds
vendors/merchants/storage - dark green
I know it sounds like turning our radar into a big bowl of lucky charms, but I think it would make the radar a little more useful
I like the idea of a more color variation, nice touch on shapes as well, for some reason deep inside I wonder if color blind people play. Would help indeed in cordination.