As Shinji once said It's a non canon novel. If that gets animated, then other, non canon story should also be animated as well, such as Kōtetsu no Gārufurendo 2nd
I hearby now declare you sir, an idiot. You never even know the real meaning of the word "Yandere" for you to classify Mari as such.
There are 4 (FOUR) movies. Since when 4 is considered a trilogy? unless you fail at maths that is

There was no Vatican treaty in the series. And NOT ALL Eva Series was completed in time, hence the limited ones you see at the End of Evangelion. Seelee had no choice since Gendou is pushing for his own agendaIf you watched the director's cut of the series, at the end of episode 24 the preview showed Unit 02 fighting the Eva series, instead of the aired ep 25. And I think in ep26 a brief scene of a dying Misato (who was shot saving Shinji during EoE) was shown. Thus you can say that EoE WAS the original ending for the series planned by Anno, just that he changed it due to budget constraint.

Nothing wrong in both. Heck, for me, EoE and ep 25/26 goes hand in hand if you watch them together. I mean the "omedetou" scene can be said to be the souls praising Shinji for rejecting Instrumentality. In the end, which makes more sense to you, that's your ending.