The links DO work, you just need to know how to use them. Of which I do. ^_^
Regarding ideas, I really don't think Wart should be a playable character. He's not appeared in any games for years, meaning nobody would know who he is. :/ Myself, I think Fly Guy and Blooper NEED To be playable along with alternate colourations for all the characters, eg: Fire Mario and Blue Shy Guy, although characters which have multiple species can have multiple varients in a race. Say, in a Tournament you are against 3 individual, different coloured Yoshi's or Koopa's. BUT, you can't be in a race with a Normal Mario and Fire Mario for obveous reasons. I think Toads Factory should make a return, I loved that stage to death!