If you are creating a form where a group or field needs to be repeated multiple times, there is no ability to duplicate the group meaning that you are required to re-create the same group manually multiple times which can be very time consuming if the group needs to be duplicated many times.
Brendan Munro
One way I have stopped the recreation of dropdown fields I frequently use in forms is to create a "Master tab" where I create location, yes / no, results, etc dropdown, radio, checkbox, etc fields. Then, when creating the same fields within a form, you select the field type you require and then choose to use information from an existing field, then choosing the form field content from the existing field created in your master tab.
If you allow for custom text to be added to a dropdown field, you can also then allow the custom text to be added to either just the form in which it's used, or to add the new text into the field in your master tab.
This only helps for those types of fields though...