The URL fields in the designer should allow linking to CMS fields, for both Spline and YouTube background elements.
I have a CMS with a number of products. On the product page I would like to be able to use the CMS to dynamically show the 3D model of the product using a Spline element and/or have a YouTube background element specific for that product.
It would be as simple as having a field for the Spline URL or YouTube URL in the CMS collection.
The only thing preventing this is that the URL fields in the designer don’t accept linking to a CMS field.