User blog comment:AdmiralPedro1stFleet/Goodbye Indoctrination and Hello Beings of Light/@comment-4975218-20120419044103

In my own testing, I was not able to make EDI leave the Normandy after the Destroy ending. Has that ever been proven?

Regarding having the BoL let Shepard join them, that would be the most believable outcome assuming your version of events is correct. The Reapers and therefore the BoL are clearly very impressed with Shepard, and if they believe anyone to be suitable to join their ranks, it would be Shepard. Furthermore, if it is possible to make Shepard a BoL, then it would follow that the BoL were once organics themselves. If this is true, and they are suitably impressed with Shepard, they would certainly be willing to let him become the next representative -- they gave up everything to become what they are, after all.

However, this is all not much more valid than the IT. Not only have you already begun down the path of creating completely new and totally unfounded lore to justify it, you assume that that Catalyst is lying and therefore open absolutely every piece of that event to pure speculation. It's not that it's certainly wrong, it's that there just isn't enough information to make any kind of real inference. That is part of why the ending is such a failure: you might as well just have just been asked to choose between three doors with no context.