I love you all to death (Just so I can smash bros with you) (SSBWiiU/3DS)

[Kriven]

I'd like to point out that, statistically, including elements which appeal more to niche audiences than to the general consumer is more likely to guarantee sales (in all forms of media). So games which can blend niche characters with casual characters are probably the better selling titles, and thus encouraging the inclusion of at least a few niche or cult icons.