I really don't see them going for it. I never believed in it but told its more ardent BSN supporters I'd be OK with it if more followed; I'm not one for especially artsy, experimental, French New Wave sorts of endings where the last canonical thing we'd see as-is would be Shepard's gasp for breath and whatnot. But I did tell them, hey, if they want to continue with it (like you're saying, ZFS) then sure, but I don't believe it was their aim.
I had a lot of vitriol flung at me, people telling me I was just 'an indoctrinated sheep for not seeing the obvious truth' and 'you'll just claim you believed it all along when BioWare announces it tomorrow' and then tomorrow became the next day, and the next day, and then a week, and then two weeks... and yeah, still no cookie.
But back to my point, I doubt that's what they'll go with. Not because I think it's a bad idea but I feel like it's possibly just too much work and, frankly, at its core I think the writers genuinely like what they did. Take that as you will... but I feel like they're only post-shipping realizing more closure would be so incredibly useful and a bit more explanation about the confounding elements of the endings would go a long way toward satisfying the many, many folks who find the endings terrible and distasteful. It'd also turn the endings from 'alright' to 'great' for me, personally.
There are going to be a lot of people that just won't be happy unless everything about the endings is rewritten on some level, and the indoctrination theory is a great way of going about doing that, but I feel like BioWare won't bite. They like the concept of what they did and that's just a lot of resources to spend on the project on top of that.
No, what I'm picturing is a couple more cutscenes and some more exposition. Maybe an epilogue 'reel' integrated into the thing too so people who honest-to-goodness refuse to believe Earth survived the Relays blowing can back down, on top of other reasons for it.
By the way, as an aside: people who think every star system ignited when the Relays went dark are just wrong, IMO. Does it make a lick of sense lore-wise? Not especially. Does it clash with the Normandy getting torn up from the beam? Yes, absolutely. Did the writers think much about several aspects of the endings? No, not really, so this is just no different to me. Methinks the Normandy was just way too close to that thing, considering in Synthesis we literally watch Earth go partly awash with green light Lifestream-style and it's pretty clear from all the soldiers standing around and the Reapers getting enveloped in the light and departing the planet that nothing exploded.
To say nothing of Shepard getting up at the end of Perfect Destroy, but obviously that's fuel for the indoctrination fire.
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"Something seems to be troubling Carth..." ~SCP~
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