So back in Mechwarrior Online they had a really cool system for dev communication.
Every month they would post a thread like "December's burning questions" and players would post once in the thread with 1 question they really want answered by the devs. Following that people would go in and hit favorite on the questions they liked the best. After a weak the thread would be closed and the top 5 liked questions would be sent to the chairs of the devs and they would write a response.
I think something like this would be perfect for improving communication between the devs and the community.
On that note, I would just hope that the devs would answer with their named accounts. Even if you did like 8 questions and each dev got 2 (random draw) and responded with their named accounts that would be sooooooo much better than Mark posting using the PDT account. The PDT account was created to buffer the designers from the community it really should only be used for FAQs.