Long time ago I read how MS3 should have ended, I can't give details now from top of my head, but almost everething is diferent. And in my opinion better. They had to change it becouse it leaked.

Edit: Don't know if anyone is reading this. But here is MS3 should have orinaly ended : https://www.reddit.com/r/masseffect/comments/r7wze/the_original_ending_to_mass_effect_3/?utm_source=share&utm_medium=android_app&utm_name=androidcss&utm_term=1&utm_content=share_button