Now that Manglemaw farming has been nerfed, I went looking for another spot to easily get legendaries. I found this:
Act 2, [3-1].
Portal to Khasim Outpust, run through the outpost and on to the next Waypoint. Log out. That's all the preparation needed!
- Log in and Waypoint to Road of Alcarnus
- Go right and kill off Shatterbone. [Do not walk onto the bridge; your active checkpoint will be moved]
- Rinse and repeat.