We use fairly complicated onboarding templates that are all maintained within DocuSign. Unfortunately, all of them require both the employee signature and a witness signature and take advantage of the InPerson signing options in DocuSign. Most if not all of our users do not and will not have a company account and either do not have a personal email address or do not want to provide us with that email address - they are manufacturing floor workers.
Also, I don't see anything within the flow engine that accomodates populating custom fields within the template as the new envelope is rolled off. That is also a dealbreaker for us.
This seems to be a weakness in all DocuSign integrations currently. They only access the very basic features DocuSign offers.