The game was so very close to being perfect for me; I'd honestly still give it a 10/10 because of how fantastic the game itself is, but there are some qualities lost compared to the OG:
-The voice acting and dialogue isn't as charming as the original. That isn't to say it's bad, barring Ada, but it didn't stick with me like the OG did.
-The game did a great job on following the same treads and beats as the original, but there was content cut that's sorely missed, the biggest thing being the U3 fight.
-Salazar's design feels weaker, and it doesn't really get the point across that he was infected as a child and it stunted his growth.
-Ada just in general is just kind of there.
These are largely nitpicks though, fantastic game, the design philosophy of staying faithful for what RE4 was going for is what should have been done with RE3