When being in a party, the icon on the map for your party member should be ON TOP of the icons on the map. I should not think I am alone or not see the player at the event because their blue circle is behind the regular map icon.
When someone says im here but then we don't see them on the map it tends to get annoying after a while.
It's true the visibility of the other members of the group must be greater, we have trouble finding each other, joining each other. It can make the game much more interactive with others. In addition to being able to share quests.