Despite having only completed CVX a handful of times ever and mostly going off of memory - Rockfort Island has left an impression on me as one of the coolest, creepiest and most atmospheric areas in the entire series.
Something about its level design really "clicked" with me as a fan - and I remember it being somewhat difficult to navigate compared to the other classic RE environments, but in a challenging and interesting way.
I actually think CVX is my favorite fixed-angle RE installment right behind RE1R, so I wouldn't want its formula messed with too, too much if it means sacrificing the classic's game design and pacing that's already laid the groundwork for a remake.
The truth is, Raccoon City was already the best contender for a semi-open world RE game, and we know how Capcom dropped the ball hard with that one. RE3R's level design was a terrible misstep - being the game that should've been the obvious choice for a classic to have more open-ended exploration for a remake.
I can somewhat SEE Rockfort Island being semi-open world, but not in the way I could see Raccoon City doing it.
With all that said, Rockfort Island ISN'T my first contender for a semi-open world area - but I could almost see it working. I just don't know how they'd really do it....
I ask anyone, what areas WITHIN the Rockfort Island of classic CVX really calls for an open world interpretation? It sounds like they'd have to add new areas entirely.
I do usually enjoy open world games, which is why I'm keeping an open-mind towards one, even still.
An Outbreak reboot/remake has the most potential for the best open-ended RE, in my eyes.