Lucifer
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Smash got an iteration this time and will undoubtably get one next console as well, even if they go in a new direction with it. It sells too well not to. I'd be hard pressed to consider that going dormant, even if the wait between titles will be longer than last time. Usually it takes six or seven years anyway.
They could pull a MK8 Deluxe and port it with all the DLC for the next Switch, maybe with a few extra old stages that haven't made it in or something like that.