I fail to see why people are offended that WFT is in the game. Seriously, why be angry or upset? Yeah its shocking, but unless Sakurai openly says: "we considered Ridley, K. Rool, Mewtwo, Isaac, Bowser Jr. and Roy for Smash 4, but ultimately decided to replace them all with Wii Fit Trainer", no one can be upset. She's a new character, plain and simple.
And a hell of a lot more important than many other requested characters like Krystal and Geno. Plus her dtilt, jab, utilt, all three smashes, dash attack and two of her aerials (dair and fair it seems), have been shown, and they're all unique and clever attacks based on yoga poses. What's not to love?