Clay,
Do you have a good example of such a user field?
At first I can see it would be desirable, but is it really project specific or is it just client or style specific?
It would be fairly easy to add a toggle in the Preferences to switch between editing Project user fields and Preference user fields. But then come the challenges. What if there are fields entered for both, how are they ordered? Someone will undoubtedly want to move a project field to a preference field, so it will need that. And then the tech support issues, as now there is the additional challenge that some fields are in preferences and some are in the project, so there will be the constant issue of users wondering why certain fields are missing in a new project.
Just mentioning all that, as if it’s solvable by simply adding one or two new preference sets, that would be the better solution.
—J