1. A method for establishing custom analytics dimensions in a digital form authoring environment, the method comprising: rendering a digital form in a form simulation interface, wherein the digital form comprises a plurality of fields; receiving first input from a form author via the form simulation interface, wherein the first input designates a selected one of the plurality of fields as a dimension for subsequent form interaction analysis; receiving consumer data provided using the selected one of the plurality of fields; receiving consumer interaction data characterizing a consumer interaction with the digital form; rendering the digital form in a data reporting interface; receiving second input from the form author via the data reporting interface, wherein the second input designates a form interactivity metric; assigning an initial value to the form interactivity metric based on the received consumer interaction data; causing display of the initial value in the data reporting interface; receiving third input from the form author via the selected field in the data reporting interface, wherein the third input defines a consumer segmentation; modifying the initial value assigned to the form interactivity metric based on the consumer segmentation; assigning a modified value to the form interactivity metric; and causing display of the modified value for the form interactivity metric in response to receiving the third input.