I'm not a fan of Carnage so no I wouldn't put Carnage anywhere near this project. I can understand why people would want a PG-13 rating but theres a number of reasons why I shoot for the R rating. For one thing just look at Venom,(whether it was PG-13 or R)children would be terrified if they saw that on the big screen in other words I don't want to put up with irresponsible parents. Also anyone who has read Lethal Protector and Funeral Pyre know that those two comics focus on vigilantiism. Spiderman is considered a vigilante as well but unlike Venom he doesn't kill his enemies. I wasn't going to go too over the top on the violence but I would have scenes where Venom punches holes through his victims, crushes their heads with his hands, and I would even have him use his webbing to grab and slam bad guys face first into walls or telephone poles. My overall plot idea for the film would be about how Venoms killing sprees end up making Spiderman the number one suspect when police notice webbing at the scene of each crime. The reason why Venom wouldn't be a suspect right away is because the authorities won't know about his existance right off the bat. I wouldn't go too far into Eddie Brocks origin but people would see enough of it to get an idea.