To clarify, if I was introducing someone to the Diablo series for the first time and told them they’d have to start on the first one. I wouldn’t want them playing the bare vanilla version. There is a Bezelbub mod out there that gives the game lots of QoL improvements, you’d be thinking you’re playing a build of Diablo 2 before its final version.
So, if I had to tell anyone what the best way to play that game would be, it is the Bezelbub mod. That was how I’ve beaten the first game anyways.


Viva New Vegas for Fallout: New Vegas and the Unofficial Patch for VtM: Bloodlines are my go-to examples. Not a mod but Ninja Gaiden Black is the definitive version and much better than both Ninja Gaiden (2004) and Ninja Gaiden Sigma.