Four if you count Insurrection. Ru'afo and the Son'a were trying to wreak vengeance on the Ba'ku who exiled them a century earlier.
Ah. True. Better a cliché, I suppose, than guys like Soran who acted all evil but didn't have anything resembling an interesting motive.
My main concern with this one is, as always, it being penned by freaking Orci and Kurtzman. I don't think I've seen a single thing they've ever written that I didn't hate.