As requested by some users: ‘old’ style now accessible via https://old.lemmy.world
Code can be found here: https://github.com/rystaf/mlmym , created by Ryan (Is he here?) (Yes he appears to be! @nnrx@sh.itjust.works ! Thanks for this awesome front-end!)
What about custom CSS. The whole reason why old.reddit was good was because every single sub actually looked like a different environment. I could tell where I was even at a glance, and even on a monochrome screen.