Back in college in Texas, there was a place that mainly sold pizza by the slice (like sbarros) and had lots of different toppings. Things you couldnt find anywhere else. My favorite was a slice of the soutwest...black beans, cheese, sourcream , and guacamole. Not sure if your location has alot of foot traffic to change to that type of business model. You just have to find out what people in your area need. If youre in a rich area then maybe offer a wider variety or toppings, something outside the typical shit all the other chains are offering. If youre in a poorer neighborhood or lower middle class flyer the fuck out of the neighborhood with coupons.