not all nintendo characters are silent. iirc, only link and mario are. mario could get away with being the happy-go-lucky hero who yells "woohoo!" and fights with you, while peach, toad, etc do the talking for story purposes. mario could be expressed through facial expressions and grunts pretty easily, hes not exactly a developed character.
link would be a lot more difficult, considering NO ONE in zelda games talk. if they skipped a zelda world though it wouldnt be a big deal.
there could still be a starfox world, a metroid world, an f-zero world, a donkey kong world, a fire emblem world, a pokemon world, an earthbound world, etc which could all have VA.
