Well I'm sure the journal read something to the effect of "travel to camp blah blah blah and rendezvous with blah blah blah" so I feel like travel was intended as part of the adventure. Players have little reason to visit Mor Dhona prior to the R46 mission, depending on class, so it might have been a good idea to ensure that players didn't take a shortcut.

I feel like when a game developer conducts players through the game world, he should ensure that completing quest objectives are not more important than the journey taken in order to complete them.

But i guess I see your point. Sometimes the quest should be enough in an of itself and exploration would not even be enjoyable if it was imposed upon you forcefully.

But it's just balance, I guess. Immersion vs Convenience. It's hard to grasp the scope of a game when you're just teleporting around it 90% of the time. But it's also no fun having to walk everywhere either.