I think we are all expecting some big bombshell to land right before the start of the tour. I'm wondering whether the bombshell might not be the UCI or whoever feverishly doing DNA testing on the rider's samples collected over the years to compare to the Fuentes confiscated blood bags. Once the riders sign the document it would appear that any blood samples in possesion could be DNA fingerprinted to be compared with any other evidence in possesion.
I can imagine a scenario where a team like Astana might start the tour, but by the end of week one might be knocked out do to too few riders left. And then imagine the fall out over riders losing salary etc.
This is all conjecture of course, but it seems plausible based on the mood of UCI, ASO etc.