The goal was to remake a version of the game that no longer exists, so people (myself included) can play it whenever they want with their friends without having to jump through hoops, especially since many of these cards were nerfed/buffed permanently with no way of reverting to the originals.
It's just a fun hobby project. There were no plans to expand it into anything more than a remake of something that Blizzard decided to remove and cancel, they never even bothered updating Classic mode to later versions.