I wont really give a **bleep** if she gets cut out of the game no one really likes her and people say she sucks and works like olimar.
I would switch her with any other PS3 downloadeble game
Listen to me and my cousin, the kings of FP (You guys should know, haha)
Fat Princess is the most craziest character out of the 6 rightnow, though I still main Parappa, Fat Princess is more my cousins game
There's only a few characters that I wouldn't like to be in, those being generic FPS characters like Ghost or realistic sports games like Madden or baseball games. Obliviously no Spiderman, James Bond (DECONFIRMED!!), Goku etc:. The only exception I would make for that would be Batman but only because the Arkham games are awesome and even then I wouldn't agree with that choice at all and would be disappointed.
For Playstation characters that I just don't prefer I don't want Kat or New Dante only becuase either aren't All-Stars yet and I think are too early to be included (also Bioshock Infinite stage). I wouldn't want to see Nathan Hale due to the likely amount of human characters in the game when we could get the Chimera which would be able to use much cooler abilities+supers and it would spice up the look of the roster.