As I understand it, you're saying that you suspect the problem is that the IAOC, which is all volunteers you know, is holding back unneeded rooms for the people who run the meetings? If that's not what you mean, what do you mean?
Just having clarity on how many rooms are bookable by regular attendees. I accept fully that organisers need to be based in the venue hotel.
Now we're back to the original question -- what difference would it make?
We all know that we can never get a room block big enough for everyone.
R's,
John