As a shop owner I can present free-test questions to subscribers during sign up

[chrisjsimpson]

Is your feature request related to a problem? Please describe.

As a shop owner, I cannot currently present free-text questions to subscribers before they sign-up. I can present options (also known as choice groups but these are not the same as a general free-text field before a sign up.

Describe the solution you'd like
As a shop owner I can present free-test questions to subscribers during sign up.

Describe alternatives you've considered

Should these questions have the options of being attached to plan(s) like choice groups do?

Additional context