Deleted material would have made it better
I am a proud owner of the DVD and seeing special features, I wonder why all that was cut? The released version is only 105mins and if everything would have been included it would still be within a 120mins or so length.
There would have been more build up. Milo's trip to Italy, his relationship with Atticus, Felix's disappearance, tension between the senator and Cassia's parents etc. One significant character they cut altogether was a crazy, fortune telling "priestess" who tried to warn Cassia's dad about the disaster.
Also the scene where Milo and Cassia escape the party and ride to the hills was originally longer. Can't imagine why it was edited shorter as this was the scene where the two fell in love, after all.