Obsidian Entertainment has posted an external survey to gauge players' responses to questions about DLC. "We made a survey to help make the DLC in our games better." Questions are, of course, tailored to Obsidian's stable of games including Tyranny, Pillars of Eternity, Fallout: New Vegas, Neverwinter Night 2 and Dungeon Siege III. Another question deals with how "valuable" DLC is to games like Pillars of Eternity (cRPGs).
If you're willing to lend the Obsidian team an honest hand about DLC, you can head to Survey Monkey to get started.