There's still hope for Marco with Tarma, Eri and Fio as alts since they all play basically the same in Metal Slug and they could work something out for them. Still, I'm very content by the amount of stuff from SNK, especially the Metal Slug tracks. They seriously put Square Enix to shame with their content. 50 songs is the most we've gotten from a single DLC release so far for Smash.
Beware the Dark Wolf once more!