Sure if they want to adhere strictly to the SF formula. But if they let go of that they can push the franchise into a new direction. Like Nintendo did it with Zelda since the old LttP formula was rehashed too many times. Like they can add RPG elements like upgrading characters and ships and being able to change party members. Or procedural generation with rogue lite elements for example. Nintendo basically has zero imagination when it comes to StarFox, they could have at least created a new story line.