Jim's correct, running around even if just exploring an area is fun in a group.
Makes events and Skill Points fun.
I would also like to do more dungeons as a group.
We are all still pretty new to this game so learning how to build create builds correctly will also help with Dungeons. Example: Warrior, if you distribute your traits and obtain the right Runes, Armor and sigils etc you could be somewhat of a Tank by maxing out Toughness.
Getting all the same types of runes is important, try to select balanced set of Armor if you have different playing styles. It will take time to get use to all the new builds and styles.
Count me in when you do a Dungeon..