If the crucible had to be used then I would have it give off a blast that targets and deactivates the Reapers shields giving the fleets a chance to beat them conventionally. When Sovereign's shields go down in the first one it temporarily stuns him giving the fleet a chance to strike. I would like the Crucible to do something similar, instead of being a "Reaper Off Switch" it weakens them. But even after the Reapers shields are down you still need to have gathered a certain military strength to win, if you don't have the necessary strength then the reapers recover and wipe out the fleet.
Assuming you have the required fleet strength to win, the fleet takes out the Reapers, Shepard is hailed a hero. From then the various races can begin to rebuild their homes, Shepard get's his/her house and little blue babies etc etc.
But since this ending doesn't exist I'll continue to go with the Indoctrination Theory.
Assuming you have the required fleet strength to win, the fleet takes out the Reapers, Shepard is hailed a hero. From then the various races can begin to rebuild their homes, Shepard get's his/her house and little blue babies etc etc.
But since this ending doesn't exist I'll continue to go with the Indoctrination Theory.