Switch is pretty interesting from a tournament perspective, like shown in the sizzle reel.
Of course this is based on so many contingencies that may or may not be supported by the platform, but bringing your setup with you, docking it, and having all of your character/control preferences automatically synced to a LAN game would be dope. Most likely you won't be able to dock multiple consoles into one system, and a LAN network of the sort would add significant latency, but it's a cool thought. I remember them talking about potentially doing something like that for SFxTK preferences, which I can't recall if that materialized or not.