This is a tricky thing. If you are officially acknowledged as a representative of your company or the Khronos OpenGL ARB WG more people want to be involved in what you say and how you say it.
Keeping the forums informal is the best way to keep information flowing and to get an idea of what individuals really think. In the end, I'd rather hear from the individual than get the party line from Khronos or a member company.
To that end, I would hope that Khronos, AMD, NVIDIA, Apple, etc would encourage open discussions. They don't commit anybody to any course, but they would allow developers to follow the logic of the current directions and to be more involved in the process by way of voicing concerns or making suggestions.
We still need regular official information dumps though - via newsletters and (even more desirable) meeting minutes that don't have all the interesting bits redacted.