I can understand your reasoning, but it’s not practical.
And CH4 significantly deviates from my idea.
And even if Suzinak gave me (or to anyone else) all the assets (3D models, locations etc.) it wouldn’t be possible to replicate what he’s creating in his style. The animations, the lighting, the high resolutions.
Each artist is unique in what they’re creating. It wouldn’t worth it picking it up where CH3 ended.
It’s as if you have a halfway done movie started by Scorsese and you’re asking Michael Bay to finish the rest of it. Like the first half is Goodfellas with mobsters and crime and the second half they turn into Transformers with explosions
My point is that even if the story was consistent, it would be obvious where the art changed and it would be a mess. No successful game has ever done this. It’s not worth the effort. At least from my perspective.