Form Prefill Enablement at the Form Level

It would be great if we had the option of enabling the form prefill option only on select forms rather than across the entire instance. Perhaps we could have it as an option when creating a specific form rather than having to make a blanket choice for all forms?

Maybe this is a unique application of the prefill feature, but in our case we have a number of different sales lines gearing unique programs towards many different types of external contacts. It would be helpful to have the prefill as an option depending on the specfic group that will be using that form. Thoughts??