Originally Posted by Maylander
You can't have been paying attention. There is no C&C - as long as you complete all quests, you'll get enough points to get the standard three-choice ending no matter what the outcome is of any quests. Whether you get 7000 rating or 5000 rating is completely irrelevant, as neither one is enough to get the bonus ending without multiplayer.
Spoiler – Example Solving the Geth vs Quarian conflict has no impact at all on the ending. I've tried more than one solution. It's a story arc that spans three whole games, and when you get to the end of ME3 it's rendered completely irrelevant. You can, quite literally, commit genocide of an entire species without it having any impact at all on the ending. That sort of thing should have an effect beyond a few extra bonus points that won't change jack squat unless you play multiplayer.