Xenosaga and Xenogears seem to be doing pretty well for itself, as far as staying in peoples minds.
Now will it be talked about in the same light as Mario or Zelda, of course not. We are talking about 35+ years (and Mario I think is creeping on 40 years) of history. Now if there were only a generation where we could play practically all home console LoZ's, and heck why not update the old 3D games graphics, that would be amazing woudn't it? Oh wait
Xenogears is legendary because of its ambitious plot, music and pleasing art style. Xenogears remains the best game in the Xeno Series though the second disk was rushed. Xenogears also was part of a legendary JRPG system: The PS1.
Most people's introduction to Xenoblade would be either the Wii, 3DS or the Switch...the Wii U ...sadly won't be remembered as well.