I also read a lot of people saying Conners should use the symbiote for his experiment to regrow his arm. Now, I know nothing like that happend in the comic book, but if they were to go that route, and it were capable of regeneration, wouldn't that be a great way to have brock return? Have him just regenerate, in a visual similar to, I don't know, maybe the way the leech monster first did in resident evil 0? I mean, I am just throwing ideas around, but that would logically make sense to me.
I think that's a great idea for Brock's return.