How about we get them as a tutorial fight? "after five years in the void, the garleans have set up a forward command post at the base of the crystal tower/ area bahumat destroyed. Our characters just so happen to return to this area after their mysterious disappearance, right in the operations command of major biggs and lieutenant wedge. who then proceed to give us a break down as to whats changed battle system wise in the time we have been gone while fighting us... leading to their defeat..." just a quick thought something along those lines i think would be pretty funny.