For my own personal level layout, I wanted it to be some sort of parkour type of level where at the end the player would be rewarded with a giant pile of gold. I call it Scaling the Towers.
The story for this level is that you are trying to be a parkour master and your are scaling different building while avoiding different traps and such in order to keep people, like yourself, off of the roof tops. The goal in the game is to overcome all of the obstacles and collect your earnings as you work on becoming a parkour master.