There will never be a consensus on the ending, just like there will never be a consensus on the ending of The Sopranos. The consensus is specific to a group of people. A lot of players liked the endings if not loved it altogether. The survey itself is offensive to those who do and assumes that the endings are unequivocally bad (which is false). For example, I liked the concept of the Catalyst, and his logic was already faulty to begin with: the argument that Shepard provides is enough to make the Catalyst rethink his position. While more dialogue could be a possibility, I think brevity is better in this case because a verbal diarrhea tends to make the viewer uninterested.
Also, Shepard was knocked out for God-knows-how-long, so the Normandy escape scene and the idea of ships and nations "starving to death" is flat-out ridiculous: if you actually read the Codex, you'll find that many ships can travel extremely fast and make it to their home systems. Besides, what makes you think that every single member of every single species is on Earth?
Third, the themes from the trilogy were many throughout, and there were many hidden messages that the players drew out of. Each experience was personal in the sense that it forced you to elucidate a theme (hope in a meaningless universe, for example?), and there wasn't any clear-cut unifying theme. Moreover, closure in storytelling can be a bad thing sometimes, and given that this was told from the perspective of a man or woman who is on his own and sacrifices himself or herself for the safety of the entire galaxy, I think adding closure would be unrealistic: you've been given enough closure as to the stories of these characters and how they relate to your Shepard. As for the mass relays, read my sig links.
Also, I strongly disagree that your previous decisions were irrelevant (see my sig links again). The fact that you saved the Rachni Queen, for example, and find her embedded in Reaper tech makes you wonder as to whether saving her this time would be the right thing to do. The companions in ME2? Biggest examples are Thane and Kirrahe: if you didn't save them both, then the Salarian councilor will die. And war assets? They do matter: if your war assets don't meet the minimum, then you don't have enough people fighting the Reapers, defending the Crucible, or even building it, hence leading to a premature detonation of sorts that backfires due to the lack of manpower and brain-power involved in such a project.
Overall, this survey is a joke.