Bully is the right choice as the leader of A&8. Bully will turn on Sting, Aces will win the match and the feud will continue with Bully as leader. Sting should not turn heel, he's too much of a legend, it won't work.
myself it would be a very good choice if the writers can do this right i can see sting as the leader of An8's
because it is very few wrestling organizations that can actually pass certian superstars as heels for instants wwe had a really hard time passing the late chris benoit and eddie guerreo off as heels because of there writing team at the time which also had eric bishoff working with them along with that nimrod vince russo on there wirting staff