Besides chilidogs, there are a lot of things that were left out iwth the creation of sonic in the game, in my personal opinion, Sonic was made very wrong.
My feeling about the smash series is that characters should use utilities that they have from every game to fight others, although extremely hard, extremely possible.
I do sympathize with sakarai that he was the last character added to the series, and only last year, but he did have the sonic team help him be created. I just can't believe that the sonic team / sega approved his moveset. where are the rings? where are boxes for power ups (that would have been an awsome item) ?
why isnt tails bringing him down for his entrance? why is shadow and AT and knuckles only a cameo? so many questions.......
BUT! you have to be happy that hes even in the game