Re: BvS villain poll
Metallo just makes more sense to me in the context of a BvS film, then Brainiac does imo. I wouldn't want a villain so major that it takes away from Bruce and Clark. Having Lex as the puppet master with Metallo as his creation is enough imo. You could have Corban be a military vet or even have him have some connection to the Gotham underworld.
If the whole thing is about Clarks enemies finding ways to weaken him, it would make sense of you had Batman's battle armor in addition to Metallo's cyborg body with kryptonite.