Anytime I've ever PM'd TheProf for anything, he has replied pretty much right away. From my experiences dealing with him, its been very positive.
This GB requires a good amount of coordination and work and props to all the people behind it.
As far as I'm concerned, updates would be nice although as Mashby mentionned that the PCBs are yet to be done so there is a bit of time left to get all the part orders done.
I, along with many others I'm sure, would like to have a discussion with TheProf regarding various things but I guess I'll do it when the time comes closer.