Prediction: Decidueye Will Become As Popular as Charizard/Greninja and will be playable in SSB4 (Switch Port)

[Lonely_Dolphin]

For a more serious answer, I'll admit, it's extremely tempting to go with Rowlet, I love the Archer motif. Unfortunately, Charizard was first and Greninja is a Ninja so I can't see Decidueye in the same league, but it'll be the #1 gen7 starter for sure.