@holger1405
LOL, the sarcasm is thick with this one....
Yeah, hundreds of millions die...and you can show that so the endings aren't all sunshine and roses...BUT
1) You may have gotten the Geth and Quarian to be allies again, letting them work together to a better future....but in Red ending, NOPE the Geth had to die because they said so....you do remember Geth are software, and a red energy wave shouldn't be able to wipe out only certain software and not all software, and Geth could live in a minor computer such as a suit environmental processor meaning fairly low CPU capacity.
2) Hey, lets look at Green....in some fashion, a human is able to be used as a template to transform ALL living things in the ENTIRE Milky Way Galaxy into some hybrid bio-synthetic lifeform.....because human DNA is so special it can even effect Turian and Quarian DNA properly, let alone all the billions of lifeforms across billions of planets in the MW Galaxy. Hey, and in the Green wave it can be done in the blink of an eye.
3) Yeah, millions die, but in ME1, you overcame the impossible to stop the Reapers and Saren, in ME2 you overcame the impossible to stop the Collectors and save your crew, in ME3....you need a giant space microphone to access a portion of the Citidel that NO ONE KNEW EXISTED, but someone created a giant space microphone to jack into it, so that awesome things could be done by Human DNA. IF the Citadel controls the Reapers...wouldn't it make more sense to just blow the fluffer up???
To my mind, the Red Blue Green endings actually take away from the impact of Billions dead in the war, and everything wraps up in cutscenes and a sad procession at the Normandy Wall. You feel the loss when you are on the main planets fighting, but you really don't see it after due to the way everything ended.