Rogue + Enchanter + ???? What class?

[Samoht]

For dungeons, this group is going to need a tank *and* a healer. Pick one and then find the other online.

For outdoor aggo kiting, you'll need someone who can snare. Probably a Necro or Druid.

Druid easily fills both roles. Pick that.

[falkun]

Druid. SoW, ports, snare, heals. Everything the enchanter doesn't have. ENC+SHM will have too much overlap until torpor, and that's a LONG ways away.

[Vylan]

Druid would be a good choice imo. In a couple months there's going to be a lot more outdoor options as well and the druid will help get around.

[Grombar]

Outdoors, any class that can snare. Druid, ranger, necro, SK.
Indoors, a class that can tank, War, pally, SK, ranger(until later levels)

Take your pick!