I've began replaying the OG - in English because well, if you think the EN translation is bad, just know that in French there is a main character named CLAD, that's all you need to know about this translation - and because it was years since I last played, I had forgotten a TON of things. But when Nomura says "those characters have always been like this to us", man, I get it. I totally understand how they took things and expanded on them - for example, Tifa's struggles were shown once in Midgar, after the plate fall, and I'm like "oh they really expanded on that uh?". "These guys is sick" for example has also been expanded on a lot when it really was 30 seconds in the OG.
I really wonder if we're going to get the Kalm flashback as it's an important event in the OG. Looking at it, with knowledge of both the OG and the Remake, it will be very much clearer that Cloud is full of shit but at the same time knows things he shouldn't. In the OG, it was weird because he and Tifa barely interacted (and well... that's because it was Zack lol), because of Tifa's reactions too. So when in Remake we see Cloud and Tifa interact the way they did, it's very clear that... it can't be. So I wonder how they're going to tackle this, because it was part of the illusion in the OG.