Not me, if a game starts where they are based at, and you get a chance to join it will make sense. You can t just walk up to a military merc corporation guy and ask to join. Blackwater main HQ is not in Iraq. The men there are not talking to anyone, or taking anyone on board, because that is not their job. The U.S. government pays them to escort vips or important stuff. They are kind of above the law over there. Many shady things they do over there fall on the feet of the U.S. military, because from a distance you really can t tell them apart.
The game would need to start where Talon Company main HQ is IMO.
Then you could talk to people that are in charge of hiring. They are not good or bad in my book. $$$$$
I think Blackwater still has to follow Iraqi law, I doubt Iraq made an exception for any mercs. After all, Iraq is a sovereign country and that means Iraq gets to make it's own decisions, it's own laws, effective for all within Iraqi borders.
Anyway, I think it does make sense for Talon Company to try and recruit you, but only after you somehow show how capable you are. One way is to play a role in taking a well defended location for some faction. Maybe when you prepare for the final battle, it could even be possible to secure a contract for Talon Company to side with some of the factions.
As for factions I'd like to see, there's quite a few in several faction threads and they are worked out better than most of the faction we currently have.