The Venom character didn't go to crap because of Brock being the host, it went to crap because marvel did what they always do with a success... they beat it into the ground until it is no longer a success. Carnage and maximum Carnage and the planet Symbiote storylines, etc. are what made Venom no longer interesting. Instead of delving deeper into who Brock is/was (aside from being married), their solution to more sales was to just add more symbiotes. Venom was no longer original, and basically became a boring one-dimensional villain.
The same can be said of most villains in comics. How many villains actually have any REAL depth to them? Like I said, when writers do manage to bring out villains as real characters, things get interesting. They could have done that with brock, but they chose to go a different direction. And having the suit jump around every few years would have been equally stupid because then you'd REALLY never have any depth from whoever the host happened to be. You'd either have the suit jumping to known superpowered villains (like Scorpion, whose always been a ****ty second rate villain anyway) which would become really overused after awhile... or you'd have to keep coming up with new regular people who just happen to get the suit for whatever reason, and how much depth could possibly be made for them if the suit jumps away after a few years (which, btw, in comic book time would be mere MONTHS).
Then most villains should be obsolete, especially the Green Goblin. Because most villains are obssessed with only one thing or another.
Again, that would apply to most villains, that's what makes them villains. We all know they're never going to actually kill Spider-Man, but we still like to watch them try, right? And c'mon man, that storyline with Venom hunting Spidey on that island is a classic, don't you think?!
Definitely agree with that. I think that's where venom went downhill, Marvel could have spent the last 10 years really creating a very rich history of Brock, but instead created multiple symbiotes which only managed to diminish Brock (or the origianl suit, however you wanna look at it) as a major villain.