I'm with you. I guess you could say I was doing what Raimi did, catering to the Venom/Carnage fanboys who would be reading my post. Honestly, I'd rather Raimi, or whoever directs the next one, stick with the classic villains, but you know as well as I do, the pressure to include Carnage will be on. My point earlier is simply that I think it was far too soon for either of the symbiote villains to be included in a Spidey film; if they must do it for the fans sake, they could've/should've held out a few more films. I'd rather see Venom and Carnage both in the same movie, a la Maximum Carnage, rather than Venom/Sandman or dare I say it, Carnage/Lizard.
I'm hoping for the Lizard next time. And if there must be a second villain, which I'd say is a good possibility, seeings how they are now going to have to try and top the extravaganza that was part 3, throw in either Electro, Mysterio, the Scorpion, or Kraven the Hunter.
Edit: Now that I think about it, Kraven the Hunter would be a perfect second villain to go along with the Lizard. Not only would Spidey have to protect the people from the Lizard, but after finding out the Lizard is his dear friend and teacher, Dr. Connors, he'd have to protect him from the madman Kraven.
Note: Since Venom has already been used, and they'll have to up the ante to keep the public interested, beefin' up the Lizard will probably be necessary. Think twice the size of Spidey, with a tail that can smash/slice right through a city bus.