Early in development Carnage was going to power up to truly massive proportions in what was dubbed "Uber form", it also incorporated Carnage with wings, something that pops up in the comics a few times. The climax of the sequence would see Carnage atop the cathedral whilst it is entirely engulfed in flame. Ultimately this was dropped :D
It was great messing around with how his wings would look, initially going for a more standard dragon style of wing then with a design that closer resembled Carnage's shapeshifting state, wings that looked more fluid like and alien.