We're also looking for this feature. Not currently possible, but a lot of customers ask how they can order the same customized product with only a name variation on the back or side of the product.
Hopefully this will be available soon!
Unfortunately we're in the same boat. As this is marked as a "Planned" feature we did not want to allocate any budget to this since it's probably gonna be available in the next major release. I'm not a FPD developper though so I can't tell when that might happen.
This feature along with the possibility to order products in bulk (with different colors for example) are two pretty popular features so we can only hope that they are going to be integrated soon.
Have a wonderful day ahead!
This is added an own add-on for Fancy Product Designer, available for WordPress/WooCommerce and JQuery.