Now, once again, why the frack did the Normandy fly away from Earth in the middle of a crucial battle and try to escape that Mass Relay shockwave?
Two things:-
1) I already gave an answer for this but I'll do so again: if you saw a shockwave of unknown energy rushing towards you, wouldn't you try to escape it? The movie cutscene shows the Normandy trying to outrace the wave which says to me that they didn't know what it would do and were scared of the consequences, ie. they thought it would kill them. Or do you think that they should just sit there and trust all shockwaves of unknown energy types coming towards them?
2) Like I said to Lupin, why do you need to have every question answered? There are a billion possible solutions to all the questions posed by the fans but people are assuming that there can't be an answer solely because whatever answer is given will not satisfy them, not because the answers aren't possible, logical or reasonable.
Also, there are some possible endings (you probably didn't have that ending, so I understand you don't know) where in fact crew members step of the ship that were with you during the final push. How did they make it back to the ship? They should either be dead or aboard the Crucible with you and Anderson.
Again, I answered this. In the final run to the teleportation beam, you aren't with your squad. The other two have returned to the Normandy. I really don't see why people turn that into such a big problem when it's happened before in the series.
As for the ending I got, Joker got off the Normandy with EDI and EDI was part of the team I took to Earth. I had an EMS of 8,500 (with 100% galactic readiness) so I had the best possible ending. It didn't jar at all for me because I knew she wasn't with me in that final run to the teleportation beam. And if I was on the Normandy, damn sure I'd be trying to outrun a shockwave of unknown energy type regardless of who was left on the planet.
OF course, it doesn'T make sense to me that the "Destroy Reaper" option also destroys EDI and the Geth and all individuals with Cybernetics. Or that Synthesis actualyl solves the problem of the created eventually ending up fighting their creators - can half-synthetics not create artifical lifeforms?
Again, these aren't questions that need to be answered by the game or the developers. Fill in the gaps with your imagination. There are so many possible answers that we, the audience, simply don't need to be lead by the nose to every single conclusion. At the end of the day, NONE of Mass Effect makes any sense. Eezo doesn't exist. The relays violate every known scientific law. Reapers aren't going to hail from the skies and destroy galactic civilisations every 50,000 years. And why 50,000 years? Does that even make sense?
Examine any fictional creation close enough and you'll find holes. Yet people are only doing it to Mass Effect NOW? After three iterations? I don't think people are doing that because there's anything legitimately wrong with the franchise or the endings. I think they're doing that because they didn't get the happy-happy-joy-joy endings that they wanted. Personally, I'm glad Bioware went with what I feel was the right ending instead of the 'feel good' ending. And nothing about the last levels jars for me.