__Good point- they could use Scream. But that's a VERY attenuated connection- and there's no emotional significance to it.
__All they have now, for ANY emotional impact, is Gargan-Venom... He's Daddy? That's so...meh.
__Brock was complex. He would have brought internal conflict to the role of Dadddy, that the sym alone could not.
__Brock wasn't sure he wanted any symbiote living. In all honesty, even his own- that's how it sometimes seemed to me. His violent opposition to other syms began in Lethal Protector when he gave the idea ONE chance. That smacks of projection to me. He was ready to displace his own "evil" qualities onto them. Perhaps he unconsciously hated his partner as much as he loved it, back then.
__A little later, he managed some tolerance of Donna.
__Then they began to submerge him in the sym.
__Well, they should have stabilized that process at some point short of completely expunging him (He may not be dead, but he's not been "heard" for TOO long).
__He should have been in VvsC. I could have seen him trying one last time. Pat is the kind of person who would have appealed to Brock. Pat was not an enemy- but an "innocent" victim.