well, maybe you have a point. :P
I can see Lizard, Scorpion, Venom, Carnage, Sandman
now just hold one, and listen... let me explain:
LIZARD: I don't think Sam Raimi is stupid... he knows for like 2 movies, people have been wanting Lizard to be the villain. Now I don't think for a second that he's gonna wait another movie after "3".
SCORPION: JJ hates Spidey. Scorpion's such a good villain. I think Sam realizes those two facts and also realizes that by now JJ MUST have at least thought of hiring someone to take Spidey down...
VENOM: 10-20 minutes is not enough time to have Venom on the screen. Sam, no matter how much he hates Venom, knows adding him in a 4th movie will bring in the dough. And also, it doesn't make much sense to bring in one of the biggest villains for only 10 minutes and that's all.
CARNAGE: Ok, I think he'll either be in the 4th, 5th or not at all... If Carnage is gonna be in the series then I beleive Sam will at least wait until the 5th, possibly 4th. But it doesn't make much since to wait until 6th with this character... you need at least two movies to introduce him and have him terrorize people, etc. It'd be kinda like he killed off Doc Ock in 2nd, if he introduced this character in the 6th and then killed him off. Carnage at least needs 2 movies.
SANDMAN: I personally think killing off Sandman in 3rd would be a bad idea. This is a very in depth character. If anything, have him make a cameo at the beggining, and have him killed early by Venom. OR another idea would be having Sandman finally see the error in his ways, and then try and become a hero, and then before he has a chance to do good, he's killed by Venom. But really Sam may kill him off in 3, or he may bring him up one more time... either way, I can live without this character in 4.
MANWOLF: Haha, no...
:P