I may have come from the NES era but I still think the original Metroid, while kind of revolutionary, was also kind of garbage. Metroid Zero Mission adds more modern QOL features to the original Metroid game (map being the most important) while adding some storyline, cut scenes, a new graphical upgrade, and saves! If you want to play the original Metroid, just skip it and play Metroid Zero Mission, it’s the superior version.