Exactly. Mean, from Kirkhope's point of view, you're told "Hey, we're gonna include Banjo and Kazooie in the game. Please don't tell anyone until we reveal them, and create a track for the trailer". Of course you're going to be emotional when you see your surrogate son animated beautifully with the rest of Nintendo's merry crew and nearly millions sees that same exact trailer, reacting with joy and happiness. That would bring tears of joys to anybody's eyes.

Probably still emotional, even knowing