For me, the stage select screen is the biggest thing counting against this leak. First, it's strange that the retro stages are mixed in with the new stages when in both Melee and Brawl, the retro stages were off in their own group. But I could accept that as an actual change.
The thing that gets me is the fact there there are no new DK, Metroid, Yoshi, or Star Fox stages. Those are four franchises that have been around since 64 and have gotten at least one new stage in every game, and you're trying to tell me that all they get is one retro stage apiece? I don't buy that for a second. The 3DS isn't so low on power, nor do I believe the developers were they that short on time, that they had to skimp on stages for four of Smash's major franchises. I cannot believe that they would make two new Pokemon stages and a million new Mario stages but not a single new stage for any of those four.