Liara is back, and better than ever before.
The DLC is worth every penny. I never get tired of the excellent dialogue that the ME2 writers write, and the way their voice actors deliver it, and this DLC has a satisfying amount of it.
The gameplay is nothing new ofcourse, but that's OK, since ME2's gameplay is great. The visuals are pretty good too, though I can't understand why the people are so fascinated by the exterior of the ship scenery.
There is a bug with the romance plot line, but I'm sure we'll get a fix or something pretty soon.
All that said, the real good part is after the DLC ends. There's a ton of new info and lore about the characters, and some of it is quite funny.
So, it's been said many times before, but I'll just say it again, Bioware had delivered another awesome DLC. I just hope we hear about the next one very very soon.