"The expansion offers a higher level cap, artifacts, new companions, new abilities, and a new realm to explore along with an expertly crafted story from Carrie Patel, author of the Recoletta series and writer on the original Pillars of Eternity, and Eric Fenstermaker, lead writer on Pillars of Eternity and one of the co-writers of South Park: The Stick of Truth alongside show creators Trey Parker and Matt Stone."
That's since serious sentence overkill there.
But guys... it's an Obsidian game. Of course it needs massive post-release work. For what it's worth, the final third is the best, including equipment. The characters START to all have personality, and the story finally gets significant weight.
As for waiting for the SECOND DLC... that's perfectly legit when the first is "Part 1"
What I want to know is whether or not your end-game will affect the DLC.