@surkit: He needs his back story no doubt, no " he is just the evil reed" like the last films. As for the metal body it didn twork so well last time it seems like lazy writting to me.
The thing that kills the FF is it's like a hand without a body. Outside of the majority of marvel continuity it just can't thrive. Doubt they own watcher, which means no adaptation of that plot, no black panther which means no Wakanda, no vibranium, no Doc...guywith a subwoofer on his hand, no fearsome four.