It is a bit disappointing that the roster seems to have lost several characters (Possibly Bonanza Bros, Alex Kidd, Ryo, Jacky) in favour of expanding the female character lineup.
I mean if you look at both characters, their vehicles are actually quite different:
SPOILARS:
http://www.tssznews.com/wp-content/uploads/2012/11/pudding.jpg
So the "Oh, we palette swapped out Ulala, instant racer!" doesn't apply as much. I would have much preferred Blaze from Streets or Rage, Tyris Flare from Golden Axe, Phantasy Star characters, or someone from the Puyo Pop series.
Especially because they went so far with the levels compared to the first -- Panzer Dragoon, Burning Rangers, NiGHTS, Skies, Golden Axe, Ourtun, After Burner, and Shinobi just to name a few.
The first game had repeat course theme types, and they seemed to try to make up for it by adding a ton of unique characters. Here it feels the opposite.
I hope, HOPE that SEGA actually do DLC this time. This thing is coming out for so many platforms, that a single piece of DLC would work out well when all said and done. I mean we currently have this weird, singular level in the Outrun Bay -- at least fill that out to an entire cup!