What if they incorporate elements from the RE4 beta we saw back in the day? Things like Leon‘s hallucinations, the hookman, or maybe even scrapped locations like the airship? Maybe the airship is how we get to the island in the remake?
The tone of the remake is already closer to the RE beta footage and early trailers (and I believe Ashley’s new outfit is also inspired by her beta design), so it‘s not out of the question that they‘ll include some other stuff from the early builds of RE4. I wouldn’t be surprised if the second half of the game is totally different from the original, and that they‘ll only show footage from the village and castle to surprise us.
I hope they go that route, and I hope they‘ll do the same for the inevitable RE5 remake (which was originally supposed to have some kind of sun/shadow mechanic if I remember correctly, where you get weaker if you stay too long in the blazing sun, and have to recover in the shadows, but shadowy areas are also where most of the zombies are).