I thought about this a bit and had a talk with cryptkeeper and came up with some alterations:
For thousands of years Scrin have been spreading in the galaxy, infesting planets with Tiberium using meteroits, then when they're completely infested and the indigenous population is killing itself, invading and building tresholds, both to mine Tiberium and add their planets to a giant network of other assimilated planets, through which they can move with help of the tresholds. Now a part of the Scrin did not like that and split off, maybe allying with survivors from the invaded planets. This rebellion fought the Scrin and warned planets with future invasion plans. Eventually they evolved a bit different from the Scrin, therefor they're similar, but not the same. On earth, they knew an invasion was planned and they saw potential in the civilization. So they sent/created Kane. What exactly Kane is I have no idea, he could be a cyborg, an Alien in human shape, or just a human controlled and altered by the rebellion. How much he actually knew before the Tacitus I'm unsure about aswell, he certainly knew Tiberium is going to come and used that to create the brotherhood, later to be an army to fight agains the Scrin empire. If he actually knew what the brotherhood is going to be used for or not, I'm unsure about aswell, maybe he was simply manipulated to belive the Tower leads to ascention etc...
Then, 1990 the Tiberium came, a war with GDI was started because they wanted to prevent the growth of Tiberium. This war also served the purpose of recruitment of more people. Then Kane received the Tacitus, either decoding the info and being convinced it would actually lead to ascention, OR it being a signal and excuse (why he knew about the aliens etc...) to start trying to produce LT bombs because the Scrin were waiting on the edge of our solar system, so they would invade and build a Tower. With the help of the tower his army would be able to strike deep into the heart of the Scrin and give the rebellion (which might've been extinct by now) a chance to defeat the Scrin. Another variation would be that he is the leader of the rebellion and it exists on many planets being invaded by the Scrin, his inner circle consisting off all the leaders from the different planets. Anyway, I think Kane is going to teleport into the Scrin homeworld and try to destroy it, together with all high Nod members, including yourself. Ajay will be left in command of earth's Nod forces. In the mean time Scrin invade, being distracted. GDI puts up a desperate fight but can't win without Nod, which starts to help. Being distracted from their homeworld while fighting earth's inhabitants, Nod and the rebels surprise the Scrin on their homeworld and overrun it. Then the epic interstellar war between Scrin and the Rebels begins or something like that until the Scrin planet is blown up or W/E, Scrin are defeated and the rebels replace it. Kane being the dictator now, over somekind of galactic empire. Then probably they'll do something like GDI doesn't agree and fight back.
Edited by Revantheemperor, 06 April 2007 - 18:10.