Geno was number one in Nintendo's polls when the fans were able to vote way back when. They put him in the game. He IS in there. However, not as you think. Square complained, and Nintendo had to replace Geno with Lucario. Thus, the random Pokemon. So, Basically, Geno's move set would be very simalar to Lucarios move set, if not identical. Or at least, that's what information I've gathered. I'm pretty sure on the official Brawl website, something like that was mentioned... I was one of the people who checked it daily.
[/very off topic. Sorry guys.]
And V beat me to it, I figured that when the projects were shut down, Square was making something Chrono Trigger related. Annnd it was CTDS.
EDIT: I just read the articles. They say almost the same thing I just said.