Why they won't: Aardvarks seemed to be overshadowed by the anteater, and rightfully so. Anteaters have that cool long snout, while aardvarks are stuck with that gross pig nose. Even the one video game starting an aardvark, the Commodore 64 classic Aardvark, was adapted from the arcade game Anteater with the same premise. Anteaters are just better.
...but if they were: Star Fox's newest challenge is posed by the ruthless Aar D'Varkian, the leader of a space pirate gang looking to conquer and enslave the innocent people of AntEternia... and who ends up working for Andross all along.