Just because Geno's fanbase is vocal doesn't mean it's particularly large. If I were a developer, I'd be about as afraid of Geno fanrage as I would of stubbing my toe. Including Geno benefits no one except a small group of selfish, deluded manchildren.
Please, your silly arguments are stupid, troll-worthy, ignorant of facts, and about half a decade old. This post I am quoting did not make a single solid point but an insult at a group of fans without any evidence, any valid opinion, or really anything at all. All you're doing is making yourself look stupid and trolling.
I'll entertain you real quick with some real facts, evidence, and valid points, just to show you how ridiculous you really are.
Several Super Nintendo RPG games and series have huge cult fan bases. EarthBound, the SNES Final Fantasy games, SNES Dragon Warrior/Quest games, Chrono Trigger, and Super Mario RPG. So obviously, Super Mario RPG is in league with many classic RPG's that helped shaped modern RPGs, and has a dedicated cult fan base.
Super Mario RPG also introduced the timed attack aspect of RPGs, which would become a staple of RPGs, future Mario RPG games (both the Mario & Luigi and Paper Mario series), and even Final Fantasy (starting with Final Fantasy VII). It marked RPG turning points for both Nintendo and Square Enix (the Square Soft), where many ideas came to be from this historic game.
Super Mario RPG sold about 1.5 million units in Japan alone (the sales figures in North America are unknown, but likely at least 50% as high) just from the original Super Nintendo release.
That's probably more than any Star Fox game, and definitely more than any F-Zero, Mother/EarthBound, or Fire Emblem game, and more than Gyromite (ROB's sole game), Kid Icarus, and Ice Climber (tell me: what does Ice Climber representation bring=???) sold.
Therefore, if Geno is so irrelevant, what are these characters=??? Why is he more irrelevant than those characters=???
Geno is a Mario character, even if Square Enix owns him. If Nintendo wants him, there is no reason Square Enix won't add him. They might say "hey, can you add Slime or a specific Final Fantasy character," but that's about it.. So stop treating him like he's in the same boat as Mega Man, Pac-Man, or Sonic (besides, if Nintendo asked for them, those respective companies would say yes too; Sega already did).
Sakurai has already tried to add music from Super Mario RPG in Brawl ("Beware the Forest Mushrooms"), and many of Peach's attacks as well as much of her fighting style in smash bros comes from Super Mario RPG. Super Mario RPG was the first game in which Bowser was playable (many of his moves come from this game as well), and the second in which Peach was playable (the first was Super Mario Bros. 2).
As you can see, Super Mario RPG has a lasting legacy.
Please stop arguing points without evidence. If you don't like Geno, that's fine, and you can express that; we can respect that. But please, leave this nonsense insults out of this thread, and out of smashboards.