Paid secure zones to keep expiry date

When we set a Secure Zone to be type ‘Paid Access’ we lose the option to set an expiry date.
I think this is still a valid option for paid zones so wondering if this option can remain included and still work with the paid recurring logic.

Some use cases:
Perhaps you’re offering a limited-time access or the content is only relevant for a set period of time.

Or would setting the expiry date via the sign-up form still apply an end date to the payments?

eg:

<input type="date" id="SZ_ExpiryDate" name="SZ_ExpiryDate" >

or

<input type="number" min="0" id="SZ_ExpireAfterDays" name="SZ_ExpireAfterDays" >