The Jackal's still out there and Miguel was on old promo art for the show, so I wouldn't rule them out.
But I don't think this show would benefit from more spider-people.
It wouldn't be Marvel Animation without some inconsistency thanks to role reprisals .Ms Marvel has the same VA in Avengers and Rising, and the Avengers version already appeared in Spider-Man. So yeah, they could have Wylie reprise Riri, even though it's a different version of the character.