See, if they were to remake RE5 I would hope the co-op shit would be something they'd get rid of. It just wasn't the right direction for a mainline Resident Evil and the game suffers as a single-player experience because of it. I think it's a case where there's no way to please everyone, though.
I like RE5 but I'm not especially attached to any particular elements of it. That's one game where I'd be perfectly fine if they did more of a complete re-imagining rather than a faithful remake. There's an opportunity to take a game that's merely good and make it great. There's also an opportunity to make a less racist game lol.