from a technicial level it may not (or may) be that amazing, i cant really judge as the CG is old and i dont know how good this was from a technicial perspective. but from an artistic perspective its pretty amazing, while some people priase anything that uses cell shading (i think thats what is called) i feel that i needs to be done properly to look good. and here nintendo done it perfectly. the game looks and feels smooth and just gives out a great mood. i havent played the game so i cant judge if its good or not, but i have to say nintendo did it justice with this remake, so much amazing work to be properly shown in HD.
i actually thought they went and redone pretty much every texture in the game, but apperantly that didnt. just shows how much work went in the GC version.