My only quarrel with Ganon or Shiek being revealed atm is that the Zelda franchise already has a lot of stuff shown in the game (3 characters, 2 stages, 2 new items iirc). Might as well give us a Starfox character or stage to balance things out, although Diddy would be the better choice tomorrow. I don't recall any DK related stuff happening after the US version of Tropical Freeze being released for some time (or maybe I don't know), so might as well make it count. It's like that supposed Rosalina buildup in December iirc (via playable in 3D world), which some of us never knew was gonna happen.
To make it short, we need a break from Zelda-related stuff for a bit, and Diddy would be the best choice for a reveal tomorrow.
(though they should change his Down-B so we won't have more banana problems.)