For a long time I've thought that Tesla should have an internal online forum (say similar to this one) on their secure corporate intranet so employees can ask questions of management and other employees, and get on the same page about certain issues. It could also help with gaps in basic technical knowledge about things that all the staff should know (like "what does that part do" and how an AC induction motor works) and keep them up to date.I know I've received different answers to the same question from different TESLA folks (store, configuration, etc.). This ought to be a good way to get the official word on common questions.
I don't think that Tesla lacks for ways to communicate with their customers. There's direct interaction with employees, email, the Tesla blogs, Tesla's official forum, and of course TMC. Tesla has been praised for their openness and transparency with their customers in the past, so I don't think the issue is the method of decimating information, it's the readiness to share it. I'm sure there are good reasons for Tesla to stay mum about certain things, but it's not clear to me how the Bulletin Board helps that.