Why do you think there are only two thrid party characters? There are many reasons why, but I'd like to hear your opinion.
My theory
My theory is that nintendo didn't want to put in ANY third party characters. The reason they did was that the creator of metal gear solid, pretty much begged to have snake put in, so they did. Fans got so excited from the inclusion of a third party character that they expected more. Nintendo, not wanting to disappoint there fans, decided to see who else fans wanted in (third-party). Nintendo (who originally didn't want to put in any) decided to put in the highest ranking character from the poll, Sonic.
That's my theory, do you guys have any?
My theory
My theory is that nintendo didn't want to put in ANY third party characters. The reason they did was that the creator of metal gear solid, pretty much begged to have snake put in, so they did. Fans got so excited from the inclusion of a third party character that they expected more. Nintendo, not wanting to disappoint there fans, decided to see who else fans wanted in (third-party). Nintendo (who originally didn't want to put in any) decided to put in the highest ranking character from the poll, Sonic.
That's my theory, do you guys have any?