Improving Some of the Weaker Movie Villains

[The Overlord]

Finally, I never got the impression that the Son'a were banished. I was always convinced they had fled of their own volition, to get away from the Ba'ku rules. Essentially, they're a bunch of runaway teens who never got the assistance, counseling etc. they needed, and have become a group of disaffected petty criminals, living on the streets selling drugs or whatever.

Then why didn't they just build their own city somewhere else on the planet? Also how do the Luddite pacifist Ba'ku defeat the violent tech loving Son'a? Heck if the Son'a are Ba'ku, why can't the Son'a just go up to the Federation, make a claim on the planet and then use the Prime Directive to keep the Federation out of an internal affair?

The Son'a are very underdeveloped and them being Ba'ku brings up so many questions that are never answered. Like I said, they may as well be evil invading aliens with no connection to the Ba'ku, if they play no real important role in a movie with a supposed gray moral dilemma.

Why don't the Son'a build their own city? Because their leader Ru'afo wants to destroy the Ba'ku, not move in on their territory.

And yet if they built a high tech city else where on the planet, they would have the perfect staging ground to launch an attack against the Ba'ku. It would have been a slaughter, with the Son'a spending hundreds of years developing WMDs, while the Ba'ku just lived like the space Amish and the Federation would have done jack about it.

How do the pacifist Ba'ku defeat the violent Son'a? Who ever said they fought? Once the Ba'ku knew who they were, they said the Son'a went into voluntary exile.

Okay, here is a big plot hole, if Ru'afo and the Son'a are so pissed off at leaving, why did they volunteer to leave?

Its a pretty lame motive for the villains to want revenge on the Ba'ku if all they did was ask them to leave. Seriously, they could have said no and the Ba'ku would have been able to do jack about it.

It really undermines your villains, when you give them such a stupid motive, who swears bloody revenge on someone who asks you to leave? Ru'afo may as well been the bad guy because one time when was a Ba'ku, his dad forgot to pass the salt.

Why don't the Son'a identify themselves as Ba'ku and tell the Federation to stay out of an internal matter? Because Ru'afo doesn't want to be seen as a "Weak Ba'ku". Rather, he wants to exterminate the "Weak Ba'ku". Which would be easier with the Federation's help.

Any other plot holes?

Except the Federation was holding back Ru'afo the whole time, he was only able to go through the whole genocide plan after he killed the admiral. The Admiral was making Ru'afo transport the Ba'ku away, getting involved them is a barrier to his genocidal plans. Keeping the Federation out this conflict would have helped Ru'afo's plans.