Have a field property for "will update" separate from Visible and Enabled
On many occasions I find I need a form control that might not be visible to most users, but WILL update the underlying value.
Currently in Nintex Forms (NF), if you make a control either invisible or disabled (so a user cannot type into it), it also ceases to control the associated value.
You can fudge around this by either using CSS to hide the control, or hacks like hiding the control behind another control, or a plain white "masking" panel. However these are kludges, and make the form harder to edit subsequently.
Logically, whether a form control:
1) Is visible to the user
2) Allows user input
3) Will update the corresponding list column or workflow variable
are all distinct.
"Will update" or "Update value" needs to be a controllable property, distinct from visibility and allowing user input, on all form controls.

Thanks for your suggestion.
I will update this idea if there are any updates to share.
Cheers,
Euan