Haha, so every game that features any elements from earlier iterations is an expansion? Each Mario Kart has massive behind-the-scenes overhauls and plays completely different. To completely ignore the changing mechanics, added racers, items, missions, karts, gameplay modes, and on, and on, and on, is ignorant at best, deliberately prejudiced at worst.
Also, I don't think you realize what an expansion means: more content built on the same engine. Simply by merit of being rebuilt from the ground up, none of the new Mario Karts are expansions.
And as a closing point, I'd like to note that it's only, what, 4 legacy tracks that are from Mario Kart 64? The rest are from other previous Karts. Which kind of destroys your hypothesis. It features 4 redone tracks, everything else is brand new, and it's an expansion? Huh?
Crusty VGchartz old timer who sporadically returns & posts. Let's debate nebulous shit and expand our perpectives. Or whatever.
