It’s great that each minion is represented on the mini-map by a small green dot. However, as soon as you leave an instance and go into the next one, all the green dots disappear from mini-map, even though the minion is still with you. If you re-summon each minion they again appear as a green dot on the mini-map.
It would be very useful to not have to re-summon minions if you want to see them on the mini-map.