Even though Geno is a no name in Europe, he has a huge popularity in the US and a decent popularity in Japan. The biggest thing that Geno has for him is not even the amount of people who are supporting, this is the statute he has. Geno is a real legend of Smash Speculation, sure there is characters more popular than him, but all of them are linked to Smash Speculation like he his. When you think about long requested characters, legend of Smash Speculations, you think about three names: Ridley, K Rool and Geno. Two of them are now in the game.
At this point, i only see two characters who are synonymous with Smash Speculation and who are still not in the game: Geno and Isaac.
I'm confident about their chances. And we don't care about many Europeans having no interest in Geno, as we saw, Dark Samus got in because of her popularity in the US. We can say the same for Ridley (remember, Japanese people call him "Captain America"). Not having a huge popularity world wide is not a problem, we know that for a fact.
Geno is iconic among the Smash community, he's requested by many Americans and Japanese, Sakurai likes him, wants him and he's focusing on fan service this time. We have the right to be really optimistic about Geno's inclusion.