The question whether a film camera is worth applying some hack to make it digital is coming up again recently.
My old Nikon F5, Canon P, Rollei 35, Pentax KX — all beautifully crafted tools *that still work*. No Lithium battery degradation, no end-of-OS-update life, no zero day vulnerabilities. They. Just. Work. And beautifully.
I would LOVE a good "digital 35mm cassette".
Having said that Fujifilm has made awesome cameras that take this on board. The X100, X Pro and X E series are a joy to use.