I don't understand why people keep saying we want Sceptile over Mewtwo. I want both of them, and I believe Mewtwo is likely. I want Sceptile over Jigglypuff. Jiggs is a joke character that's stayed far too long. It's not nearly as relevant as it was, even with it's new fairy type. It's fallen off. I could argue Granbull is relevant again due to it's new type. The only reason Jiggs is even remembered is the anime, which it hasn't appeared in for years and Smash. And we know Jiggs was low priority in Brawl. With more than 700+ other contenders, why should Jiggs come back? Original 12? That's a poor excuse if you ask me. Everyone in the original 12 has their merits and still rep their series except Jiggs.
And sure, Blaziken might be the popular Hoenn starter, but you can't ignore a few things:
1. Blaziken got a Mega. And it was already advertised. The hype revolving around it is done. Imagine at E3 we get a trailer for OR/AS and we see Mega Sceptile (it was already trademarked, so it is likely). Then immediately we get a Smash trailer revealing Sceptile. That's a great way to not only hype the new Pokemon games, but to hype Smash. Especially since the Wii U version will most likely be out after OR/AS.
2. The type triangle. Fire beats Grass, Grass beats Water, Water beats Fire. This is the first thing every Pokemon player is taught. We have two of the three, seems odd we wouldn't get the last piece. Blaziken is fire/fighting, both of which are already represented with Charizard and Lucario. 64 and Melee didn't have any piece of this triangle before and Brawl brought all 3. Why wouldn't Sakurai add it in again?
3. Sceptile is the most popular Grass starter. And in that regard, it's bipedal. Meaning it could actually fight without looking odd compared to other fighters. Chesnaught, the only other bipedal Grass starter, is unlikely due to Greninja already being in for a 6th gen rep. We don't have a starter from 3rd gen. And you all know a bipedal Grass lizard with leaf blades on it's arms is cool.
4. Sceptile is not new. People are saying we're not going to get anything from OR/AS because they'll be too new. But R/S is from 2003. That's hardly new. And Sceptile itself isn't new. Meaning it can easily be there.
I think the perfect set up would be Pikachu, Mewtwo, Lucario, Charizard, Sceptile, and Greninja. /endrant