The game took Encore as its title because, well, it's like at the end of a concert -- you just want a little bit more (plus it was easier for the Japanese crowd to understand). Also, some people complained of plasma TV's getting the game burned onto their screen because they just couldn't stop playing -- there's now an anti-burn option on the game's menu to prevent that.
As for Cuthbert himself, his favorite level in the expansion is Racer Gardens, since it's based off of a PixelJunk Racers design. He even gives you a hint on how to beat it -- the big guys always cross the bridge! Interestingly, the game's overall design is based off of Red Riding Hood concepts. At first, our Tiki hero was the girl in red, protecting grandma's house from wolves ... we're exaggerating, but that would have been the basic concept, for sure. Eventually, the design we see now took over. More information to come!