16 riders listed in this thread of how many? Of those riders how many were top level (signature series), how many just sponsored, how many basically flowed?
Massive team. Couldn't tell you the numbers. As for your second question, that'd be subject to interpretation, I don't know what would make someone just a pro or a "top level." Although I can tell you, Chris Jones, Herrington, Soy, Kader, and Bobby all have sig trucks on the brands they went to. And Boserio, Grosso, Bledsoe, Piscopo and BA all have other sig items (be they wheels, shoes, etc.). So not exactly a list of chumps.
I guess my theory is this. Yes they have a massive team, but so does Spitfire. And if Spitfire lost 20ish riders in a year (all of them at least "names") I think people would wonder? No? Maybe I'm wrong, but worth thinking about.