That's exactly what Blizzard did for Diablo 2: Resurrected, and according to Diablo lead Rod Fergusson and principal designer Rob Gallerani, the code and asset loss wasn't really as bad as the Schaefers remembered.
'It would make it very difficult for Blizzard to do a Diablo 2 remaster because all the assets we used are pretty much gone. 'We lost a lot of the assets, art assets,' said Erich Schaefer. The Schaefers remember piecing the game back together from files developers had taken home and successfully finished the game, but with many of its development files missing.