My long-winded case for this being fake.
1: Several bits of evidence that people relied on to argue this was real have shifted or been disproven. More on that in a bit.
2: While it isn't impossible for there to have been background art changes later on, the circumstances behind it seem unlikely.
So, okay, for 1 - what do I mean? Well, we started with "French guy who works for printing company that does stuff for Bandai Namco, which is working with Nintendo, releases workprints of displays showing the mural."
That's so compelling at first that the later background art details COULD be irrelevant depending on how ironclad the story behind the leak is: HOWEVER, it has become less credible for a number of reasons.
#1: ACP has no references listed. We don't know if they're working with anybody. Mariana was a stronger link, but we know definitively that Bricard doesn't work for them and instead works for ACP. Now, we know ACP does media work including gaming-related displays, but that doesn't tell us who they work with. We'll likely never know if they don't publicly list it because it's likely under NDA. This puts us at a stalemate, forcing hypotheticals to be created for that information to be true.
#2: Eric Bricard is 40-50+ years old. Per his LinkedIn, he graduated in the early 1980s, yet for some reason an experienced industry worker who likely has a lot to lose goes "**** Nintendo lol"? It's possible - but very odd. I do not take his apparent denial as evidence since him admitting to faking it (or admitting to actually leaking it) would be career suicide.
Now, for #2, it could be that someone is framing him. A co-worker, for example. It is even hypothetically possible that a Mariana worker is using his name to throw him under the bus. Snapchat names, to my knowledge, can easily be changed. There is no definitive proof whoever took the snapchat even is Eric Bricard, and as a result, a major piece of evidence in favor of the leak becomes a giant unknown full of hypotheticals nobody can prove or disprove.
3: The Grinch Renders, while an interesting factor, mean nothing.
Since we know those Grinch renders already existed, as I had brought up earlier, this may simply be a case of somebody attempting to make their leak look legitimate. If you are an industry worker, you know the equipment & materials used: Therefor, how hard is it to realistically fake a print and slap existing promotional material in the form of a print to make your fake leak look more legitimate?
For #2 - the background - let me start by saying that, as I remember it, the ESRB leak had a number of supposed discrepancies that turned out to be things that helped add to its legitimacy. The closest thing we have to that - as of now - is the Sprout, which could be any number of different items. Outside of that, we've only seen the credibility of the mural degrade.
-Sections of the stage are missing.
-Elements of the stage are missing.
-These are present on the E3 empty banner.
-They are not present on the official banner because they are concealed.
-The only areas where the leak is different are areas where characters had concealed things in all prior official murals, outside of the highly obscure blank E3 mural.
-Every attempt - and there have been at least a dozen separate ones - to try and point out the background of the mural changing has ended in failure, usually because people are tripped up by the characters on the mural collectively shifting right/left.
It is probably the greatest fake, just by virtue of the background. None of this even debunks it 100% because it really could be changes made that we are not privy to - but the longer this goes on, the more you have to invent or hypothesize to argue it has a serious backing. Former strong points in its favor are now simply unknowns.
As said before - due to the uncertainty of many claims made, especially regarding the background of who leaked it, a lot of the posts claiming that faking this would be a herculean effort do not hold water. It would be very elaborate, but far from impossible.
Lastly, I don't care about insiders. I do not trust insiders. I don't necessarily believe they are all lying, but they are taking information from sources no one can vet, meaning you require a long track record of correct information in order to take that source/insider seriously. I do not believe their rebukes of this matter because they aren't saying why, or if they say why, they are providing evidence beyond "trust me guys", words said by numerous people who turned out to be wrong. So, when I'm writing this, I want people to keep in mind that my "lean fake" position is not based on what Vergeben or anyone else said.
So, here's my take -
-Don't believe the leak because it has characters you want.
-Don't disbelieve it because it has characters you dislike or think can't be in. The latter has especially never turned out well.
-Don't be an absolutist about the leak itself until we get hard evidence one way or the other.
I don't think anything else is going to come of this short of an admission of it being fake until we get another direct, fwiw. The Wendy's thing was a hail mary coincidence that won't happen every day, in which case, we're in for a lot of dead days where we can only contemplate on what is and isn't real. I don't think it is.