Sushi Fuku adapts the business model of Subway and Chipotle to...well you guessed it, Sushi. I like that the customer is encouraged to build their own roll, rice bowl, or salad. There is also no confusion about what is or is not available.
On the other hand, the model extracts the art of being a sushi chef from the process; that is, they have a machine to bed the rice on the seaweed, a machine to cut the roll, and the fish all comes in pre-cut rectangular prisms. (Part of the sushi experience for me is finding a sushi chef who can perfectly cut along the seam of the fish which ensures a smooth taste to the fresh fish).
At Fuku, this mechanized process yields a huge roll (as you can pick three vegetable ingredients in addition to a meat or fish) with a disproportionate amount of rice at a reasonable price (my customized roll cost under $9). Which works out as the establishment is clearly target at college students.