More and more I am convinced that film need to be scanned AND displayed at very high resolution (like 8K, possibly more). There is some weird interaction between the texture of grain and digital pixels. I assume at some point of upping the digital resolution that interaction will stop and we'll finally only see the grain as the limiter of resolution of the overall image. That is why I am very suspicious that most digitally restored films (like almost the entire Criterion Collection) has been aggressively denoised and then grain was added in post. It was the only way to deal with that weird effect. I have no way to prove it but I am very suspicious that is the case.
As far as storage effect, it seems that I have to find a way to test a short strip in a still camera and develop it myself. Then, reference it against a developed fresh negative.
Thank you for showing the examples!!