I have a question: what makes you believe that the Federation is so easily brought about forgiveness, especially to renegades who, I remind you, attacked its men and equipment?
For my part, I know of no Government of any State in the world, both in the past and in the present (and I cannot imaginethat the situation to be different in the future!), which would have suffered of a form of humiliation through desertion and/or treason from a number of its citizens (who not only
question the policies of their governments, while these said policies have been legally adopted by a vote but, lead armed actions against official military forces), which, once the conflict is over, would welcome/greet these same people with open arms, too glad to use their experience, their thoughts, their ideas and their talents. And even less in a federal political system led by USA, which rarely forgives the actions considered contrary to their general policy, their property and their men.
So, do not expect that, even in dreams, especially after a war!

Hey, even the United Nations & their peacekeepers have a policy of sidelining potentially dangerous individuals, known for their (former) criminal activities and/or their armed opposition, which may damage their actions and the security of their men. And that This is to say!

As they say, this is not an old dog learns new tricks!
And for those who think I am exaggerating, I kindly inform you that the members of the French Maquis, who had fought during the WW II and survived the conflict, were NEVER recognized/accepted as fighters who freed parts of the land from the German Occupation. Result: after the war, they were either imprisoned/executed for their related criminal activities, abandoned to the vengeance/revenge of some or forced into exile. For some others, stayed in France, underground had become their daily, when they were forgotten. Of course, a very little have managed to take their game but, it was mainly for individual actions. In most of the time, they were already quite happy to blend "into the landscape" and to live a life almost normal,
as their former activities were not discovered!

-> I read somewhere that Rick Berman relied heavily on the French Maquis for the creation of the Val Jean's crew. What a pity he has not pushed his study further because the fate of the members of the Maquis survivors would have been less glorious.and their future already known!