It is just a rerelease.
They do not want to release this game again since it would be a bad thing to reproduce copies of something that came out long time ago. They are just making it prettier to get people who brought the game already to think that it is a diffrent game all together and they get special prizes.
Like there is no way I am going to buy Resident Evil on the NDS even if it has multiplay since I already have it on the GCN.
A person who owns a PSX would say the exact same thing as with a person who owns a Sega Saturn.
A great example is how somebody who brought Scarface on BW film would laugh at the person who brought the recent rerelease and revamped version of Scarface.
Another example is how they remade the original Starwars. Then agian that Episode of South Park and the raiders of the Lost Ark. Don't look into the light
somebody said