That would be amazing if Shantae were to come in. Though I personally find her inclusion to be more on the unlikely side, that's me being my pessimistic self, though. Though if this unusual silence with WayForward/Nintendo/Christina Vee is correlated to this, I think we're going to be in for a good treat.
Though I am a pessimist first and foremost, I do find it pretty awesome to see more people than just me calling for Shantae's inclusion into Smash Bros, and that over the years, seeing Shantae go from a virtual nobody with that one GBC game most people see as Shovelware to a serious contender in both the Americas and Japan makes me smile. However, using random pieces of furniture as hints for the bigger picture seems quite foolish to me.
There is one truth though. While I can understand why certain characters can/can't come in, if Shantae is nothing more than a replacement Sable Prince, I swear I will be angry for around a day, before going on with my life as if nothing happened, with some subconscious anger bubbling up on occasion. Ultimately, however, I hope to the Gods I never use this anger to just rage at Sakurai, because the guy worked his ass off and deserves a good rest and even at this point, the game is basically his Magnum Opus.