I think its obvious that the existing ending makes no sense on purpose. We are not supposed to be witnessing Shepard, we are supposed to play the role of Shepard. Essentially, we are Sheppard and it not making sense is because Shepard (you) are being indoctrinated. How could the final 10 minutes be so chock-full of plot-holes? Are the Bioware writers really that dumb after years of creating a rich, engrossing, story? I doubt it, i believe it was intentional to create that connection with the character and the player, Shepard was being fooled by the Reapers there for we were being fooled by the Reapers. Its not just an "AHA!" moment in the game. We are currently still fooled because of the lack of closure. It has had time to sink in and have more effect.
The rumors stating that there will be DLC that will have more closure and have a true ending also stipulate that the DLC will be free.
Its not as simple as "it was all a dream" its has been a process of nuances and clues over the 3 games that we didnt notice. So many hints and clues that were right under our noses. This has been careful planning not just a B.S. ending put together simply for them to say "haha it was all a dream" it was more than that. The developers played with the psychology of the gamer using the Paragon and Renegade themes that we easily associate with. The split personalities, the colors of the two indoctrination options (blue, paragon) and the destroy option (red, renegade). Many of us were essentially subconsciously manipulated by the Reapers to make the choices we made.
Im sure this video is a repost but pay attention to the visual clues. Some people disregarded the video because of the editing, supposedly its taken out of context and misleading but they simply added audio clues from the franchise to further prove their point of the hints of indoctrination throughout the franchise.
http://www.youtube.com/watch?v=ythY_GkEBck
and an article
http://uninhibitedandunrepentant.tumblr.com/post/19344938387/mind-holy-fuck
The Codex in Mass Effect 1 description about Indoctrination pretty much word for word described actions and symptoms Shepard ended up doing and experiencing. Do you think that is simply some BS "haha it was all a dream" B.S. or do you see how it has been part of the story since Mass Effect 1? A DAMN RANDOM CODEX! it has been right under our noses along with an array of cues and clues.
I'm probably going to get flamed here but seriously it makes so much sense this way. How much sense did Metal Gear Solid make? very little to none until the final pieces of the puzzle were put together and things were explained and the same thing happened here. The puzzle has been put together by people who put together the Indoctrination Theory and it blew my mind, now we just need the final piece of the puzzle which will come in DLC. If the DLC is free then, to me, the ends justified the means because i went from "meh" to "WOW" after going over the Indoc Theory. I have internet, i can download the DLC no problem, its irrelevant to me what others experience because my experience with the game to this point has been nothing short of amazing if the. If the DLC has a price then it will leave a bad taste in my mouth but i still give kudos to Bioware for crafting such an in depth story in which we were able to experience as Shepard as opposed to playing as some God being who is simply a puppet master (which is the role we assume in almost every game in history).
If you grasp and appreciate everything that has just been done then you would agree, like some people, that this is genius. I dont care about formalities or DLC debacles, i care about the rich, engrossing, original and somewhat transcending story that Bioware created. Once there is closure, a lot of people will still be upset and dissatisfied but some will appreciate the masterpiece. Im an artist, i understand that art is subjective, we all have our opinions, if Indoc Theory is true then IN MY OPINION, its pure genius.