I am not sure whether the original Q is serious, because the assumptions (too much traffic, can't get a word in, etc) are mostly incorrect.
I assure you the original question was serious. The 'assumptions' of a lot of traffic, lots of things to stear around or try and get clearance through weren't assumptions really, just possible reasons for why VFR at high speeds might be a bit difficult. They are not necessarily real. 'See and aviod' might be another reason why high speed VFR might be a bad idea.
Thanks everyone for your thoughts.