Actualy, I am.
I didn't expect Isaac at all. But I was certain that a big character would be announced, like Geno, Rayman, Banjo, whatever... Because I really took Sakurai's last interview to heart, with him saying he's referring to the ballot for newcomers.
But Isabelle ?! And a semi-clone on top of that ? Plus, it gave even more credibility to Verge who leaks so many things that I personnaly think is anti-hype.
I won't lie, I'm more salty than the dead sea, right now.
As for the pessimism, I think people kinda start to worry now : Sakurai proves us that he's not focusing on the big contenders, and can "waste" a slot with semi-clone fighters. Because yeah, you're all right to say that Isabelle doesn't disconfirm Isaac in the slightest, but the roster is still limited, and Isaac had already more serious contenders than Isabelle. And with Verge being right one more time, we could get another slot taken by a pokemon, so it reduced our chances even more.
Isaac has still his chances. But for me, they are now significantly lower. If Isabelle can get in, there are now so many characters not being frontrunner who can, and it concerns me.
Also...
Freaking FFIX is being port on a Nintendo Console. Best Nintendo Direct ever.