Seeing as the games are remakes to their original, having similar or exact sprites redone makes sense and shows connection to the games being a remake and not a new game as a whole. I for one think it was a beneficial idea to have such similarity as like mentioned it brings back some nostalgic feel to the game. Of course there is an exception to the high quality sprites with better coloring, and graphics, but that is to be expected. Other than this the similar sprites between the remake and originals only sets its purpose.