or maybe (to just have fun with it), Anakin would have been kidnapped by Palpatine and Qui Gon woulf have travelled to wherever planet he was on and knife-handed a bunch of french dudes and take Anakin back. Qui Gon's catchphrase would be, "I'll find you, and I will kill you."

Anakin did fufill his destiny...he killed the emperor in the sixth movie...bringing balance to the force