Assassin = Mission/Quest Runner?

There's one particular skill that teleports you to the location of your enemy, and you stay there until you stop maintaining the skill.

I'm thinking of all the locations (IE: the bandits @ Galrath or various areas in the Southern Shiverpeaks) where you can bypass the long route by teleporting to the higher/lower ground.

Iron Mines of Moladune comes to mind; Markis is right there at the beginning, on the bridge. Although the mission requires you to kill his Jade Armor guards as well.

Recall (Enchantment spell): while you maintain Recall on target ally, nothing happens. When recall ends, you Shadow Step to that ally's location.

This is perfect for the Elona's mission if you cast it on the ghost. Assuming you dont drop the vision crystal when you shadow step. But i think you do anyway.

Anyone think of any other uses for this weird skill? In missions I mean.

Yea, I also believe you drop the crystal... I tried the assassin premade PVP build and I was playing around with it in the training area. I was holding the flag when I had that running skill on (the one where you return to where you were when you activated it). When the skill expired, my character dropped the flag right before it teleported me back to my original spot.
I assume it works like this with any other item that you cave to carry.