qualities that make sth worth seeing (or reading)—
看头
bring out implicit or innate qualities—
发挥
qualities that delight children (e.g. bold colors in a picture, anthropomorphized characters in a TV show, the physical challenge of playground equipment)—
童趣
true qualities—
本色
slick and sly person—
油条
a sly individual has more than one plan fall back on [idiom.]—