Re: Back-To-Back Sequels
^ I'm sorry, but you really need to do some research with regards to this whole issue of filming things back-to-back, and here's why:
* The 3 Lord of the Rings films aren't a single story split into 3 parts; they're 3 distinct stories that comprise a 3-part narrative Trilogy and were therefore filmed as part of a single production
* Casino Royale and Quantum of Solace are two distinct stories that comprise a 2-part narrative, and were also filmed at completely different times
* Kill Bill and The Hobbit were split into multiple parts in post-production
* The Matrix Reloaded and The Matrix Revolutions are not a single story split into two parts; they are two separate stories that follow on from each other and were therefore filmed as part of the same production
The only films on your initial list that actually fit into the mold you're talking about are Deathly Hallows and Breaking Dawn.
I'm also not sure where you're getting this idea that Spider-Man 3 was going to have been a single story split over the course of two films, because I've never even heard anything of the sort before.