All of the characters in Diddy Kong Racing (save Diddy himself) made their debut in that game. Plus, Playtonic has said that they will fill Yooka-Laylee with characters that can (and very well might) lead their own games.
I like Taylor's overall timeline. I'm not sure what type of game I'd like to see from them after Yooka-Laylee.
After the success of this game, they probably won't need a Kickstarter for the next game. If they do need additional funds, though, I'd rather it be through crowdsourcing than through a publisher.
This team thrived when it was a small team back in the '90s with little overhead. Let's keep it that way this time around, eh?