I'm not exactly surprised that D2e is getting expansions, and I am excited by the prospect of additional content, although I have to say I'm a bit worried about how quickly this came out.
D1e suffered from massive issues with rules conflicts and printing errors, all of which lead to the impression that FFg was more concerned with pumping out material and less concerned with making sure it was GOOD. Now we're getting expansions before the game is even half a year out the door? I'm very worried that this is the beginning of a long and messy decline for the Descent franchise.
I still intend to buy the base game (I haven't even had time to do that yet!) but I won't be picking up this expansion until I see some assurances from other buyers that it's well balanced and well-printed.
I seriously wanted to see FFG slow down and take their time with new D2e expansions; to make sure we got quality instead of quantity. Time will tell if they've procured some magic wand to let them do both, I suppose. My biggest hope now is that D2e was actually finished a long time ago (and just held back by production issues) and that this expansion was actually developed in the year or so it took them to put the base box on shelves.