why is it impossible that, when asked to cut the film's running time down, it was decided that the "six previous Ones" idea should be excised and expanded upon

why is it impossible that, when asked to cut the film's running time down, it was decided that the "six previous Ones" idea should be excised and expanded upon in the form of a "twist" (instead of "Morpheus thought he found The One six previous times," it's "the entire cycle of the machines freeing some humans, the humans establish/rediscover/rebuild Zion, eventually The One is found, he resets the cycle, and this has all happened six previous times") in the sequel? that sounds pretty reasonable to me—they wanted the same gist of "you're not the first The One, Neo, this has all happened before," but on a much grander scale. it's still very interesting though that the original idea makes Cypher much more sympathetic, and the final cut makes Morpheus more sympathetic.