I hope they have multiple recurring villains and rival organizations. Red Flag may not be that dangerous. There could be big organized criminal organizations like the Triad and the Yakuza that use Alphas to commit crimes. Corporations could use them for industrial espionage. Other countries that use Alphas as spies or soldiers. Maybe the whole reason why Binghamton exists is to counter programs by hostile nations meant to train an army of Alphas for the purposes of war and sabotage. Not to mention the fact that there could be individually powerful Alphas who could pose a big threat. Although I doubt that they'd make a character as ridiculous as Sylar. I'm guessing that if they have an Alpha that could steal powers, it would be someone like Rachel but instead they use their power to analyze and decode the genes that give Alphas their power and use some sort of gene therapy to give him/herself additional powers.