I can get that, though I think for a better player experience, it would be best to go for a remake first then check out the original if you really want to, granted this depends on the remake but I certainly think this applies to Metroid
I'm guessing you were committed in doing them by original release? B/c Zero Mission just outright replaces the original that I think anyone who wants to see the series beginnings should start w/ that instead, and heck it even includes the original as an unlockable