Here's how the fantastic four should play out. First of all don't bring doom in automatically save him for a sequel. Since its a reeboot they would start off with their origin as a flashback sequence done in a dreamy montage then fast forward a a month or so and they are doing battle with the moleman and his subterranean monsters.thats the opening act then they go through the motions of a superhero film setting up the characters blah then the villain is revealed as the wizard. Who they defeat then he comes back for the final act for revenge with the frightful four team consisting of hydroman, Medusa, klaw and titanna. Dr doom would be the villain for the second film then in the third would be galactactus but instead of just silver surfer for a herald I would have him with firelord and terrax as secondary heralds an the team would fight them. Since physical fight with Galactus would be unbalanced