For example on an Employee Injury Report form it would be nice for the employee to fill the top half of the form and then submit it to step 2 where a manager finishes filling out the form by utilizing the form itself and not a task dialog (no signature box is available in a task dialog). Then the form is submitted to a merge form which formats all the data into a pdf.

Currently you cant sign a form in multiple steps like this without using a stamp. This makes the workflow look very rudimentary.