You all don't seem to understand that USADA has bigger fish to fry than the NOP, specifically the unprecedented number of uber-fast sprinters, and more generally the entrenched culture of doping that is rooted in the corporate sponsorship of track.
They seem to have conceded that testing will never get the job done. What they need is witnesses. All the light sanctions they've been handing out, odds are they've got stoolies gathering info right now. Anyone notice how Nike didn't want to officially sign Tyson Gay until he was running well under 10? Had to make sure he was still one of them.
Compared to that, the NOP thing is a sideshow. Most of it is likely to merely end in clarified doping rules. Salazar might get sanctioned, but not more than Drummond did - is that really that big a deal? What USADA does get to do is interview a lot of athletes, find out what they know - ostensibly about NOP, but potentially about other people too. A good cover to investigate those other people without tipping them off, since the people that come forward aren't likely interested in protecting them.
Then it becomes a matter of overwhelming witness presence, and that supersedes the rules, as Lance found out. The doper - or dope enabler - gets backed into a corner where they are unable to perform their role anymore, and have no choice but to give up.