[theme-reviewers] How to request "grandfathered" exception to WP 3.9 Theme, guidelines?

[Devin Price]

+1 to Justin's suggestion

The theme can check if there's a saved value for that field.  If not, it 
won't display it.  Old users can be grandfathered, and new users won't 
even know about the option.  I feel like that meets the spirit of the 
theme requirement.

Devin Price