"Global Force Wrestling" (terrible name BTW) needs a national TV deal before it means anything. Talent-wise, AJ or Aries would be a massive coup. Sabin, Kaz and Daniels, as much as I like them, aren't draws.
As you guys know, I'm sceptical whether even a single number two company is viable in the US right now, let alone two (on a national, TV-deal scale). The wrestling audience as a whole shrank drastically after Vince bought WCW and has never recovered. The key would be to get people watching wrestling who never have done so before. Signing ex-TNA talent wont do that. However, I'd love to be proved wrong!