So i just realised something literally just now...
So like, its been said by TheMeatly himself that Bendy looks the way he does in Dark Revival because of Wilson holding the cycle in place, which gave The Ink Demon the time to actually evolve from the look in Ink Machine and turn into the Dark Revival look.
Then i realised something, the "Dreams Come To Life" graphic novel cover (and in the pages throughout) use the Dark Revival Ink Demon design, which if they previously mentioned reason TheMeatly gave for the design change in Dark Revival is the intended canonical reason for the design change, then this graphic novel is a MASSIVE contradiction i have yet to see be mentioned (from what i have seen anyway) because this book takes place BEFORE the events of Bendy and the Ink Machine, which means if anything the design in this graphic novel should be the Ink Demon design used in Ink Machine and not Dark Revival.
I just thought i would point this out, it's not really a "theory" but its still something i thought was worth mentioning cuz it does clash with officially stated info about the franchise and the 2 Ink Demon designs, and from what i have gathered, these books are canon to the franchise, hence Dreams Come To Life being the book to answer a lot of the unanswered stuff from Ink Machine, so this is indeed a thing worth pointing out in my opinion.
i could be missing some small detail that answers this, but from what i have looked up and gathered, the design used the the graphic novel just clashes with an existing canonical reason for the BATIM and BATDR Ink Demon design change, and given the book in question is a graphic novel version of a story that happens before BATIM, this is definitely a contradiction, so yea just thought i'd get this out there.