Honestly, IF that theory about the beings of light is right and they have planned it, it makes the writing even shitter for 3, and really undermines the whole story and game trilogy for me. If the "real" plot involves you not only having visited a random planet in the first game, not only read the codex, but also remembered it when visiting the same random planet in the 3rd game and then piece it all together to kinda make the ending work, and then have to wait for DLC to actually finish the game......that's just fucking poor all round. I don't mind clever plots and stories that make you think a lot, in fact i love them. But this isn't one. The beings of light is the most plausible theory, but it's still massively fucking shit if it's true. In my opinion obviously.
Shows how much i enjoyed the games up to the ending, seeing as i'm so utterly sad to still get worked up about talking about it