Okay the Danger Room Previz. They should have definitely used this version instead of the one they went with.
It starts out as we zoom up close to a cigar sitting on a wrecked car. Wolverine picks it up and it pans up to his face. It then cuts to Colossus and Rogue hiding behind the rock. Colossus touchs Rogue and she metals up just as debris begins to hit them. They stand up and all three, Wolverine, Rogue, and Colossus begin to run towards the Danger Room exit door. It then cuts to Storm who is hiding behind a rock, she pulls out some night vision goggles and sees Rogue, Colossus, and Wolverine, running towards the exit. Kitty and Bobby run up behind her. Bobby asks Kitty how she's doing, and she goes "I'm a little dusty" to which Bobby replies by using his hand to knock dirt off her shoulder. She gives him a weird look. Storm then yells look out as three missiles head towards them. She uses her lightening to destroy one, while Bobby freezes another one. He turns around to smile at Kitty, as another missile heads towards both of them. Kitty grabs Bobby, like in the final cut as the missile shoots through them. They both then begin to run towards the door to the danger room. It then cuts to Wolverine standing by a car, smoking his cigar. Storm yells at him to look out, and she grabs him and moves him away from the car, just as a Sentinel foot crashes down on it. The group begins to run towards the door, and it shows a huge Sentinel hand coming out of the mist and shooting its metal rope, which grabs Colossus. It crashes Peter through buildings and debris in the danger room, before Wolvie jumps up and slices the rope, freeing Colossus and sending him flying into a collasped building. The group continues to run towards the exit, but just as they get to it, a rock slide happens, and blocks them from exiting. Colossus picks up the hugest boulder and launches it into the fog at the Sentinel as it gets closer. Wolverine asks Colossus to throw him up at the Sentinel. The scene ends just like in the final cut with Wolvie decapitating the Sentinel. Only in this version Wolverine doesn't say "Class Dismissed" he says "I'm hungry! Who's up for pizza" as he walks from behind the head.
The whole scene begins to dissolve as the team walks out of the Danger Room. Prof. X can be seen watching them from the look-out bay of the Danger Room.