Shapes, colors, tones, that should all be one to one and preserve the original design. 70% should be classic and what works from the original game. Every design choice should ignite that nostalgia and reinforce the emotional connection from the original Diablo II. The key was delivering an authentic nostalgic experience that players felt 20 years ago.
Blizzard wanted to bring a true authentic Diablo II experience to the current audience and invite new players to experience it for the first time.