I'm looking to enable linking a Link-type property to DAM assets (e.g., PDFs, images, and other media files).

I have two concerns:
1. LinkItem is not a ContentReference, but Link fields can still link to internal Pages and Media, both from CMS and DAM. Why would a .pdf DAM asset be treated differently?
2. If DAM only supports ContentReference / ContentReferenceList, then we need two separate fields in one block:
• Link field for URLs / Pages
• ContentReference field for DAM assets to get PDF links from DAM
This creates duplicate fields and may confuse editors.

Is there any recommended way to support external URLs, internal pages, and DAM assets in one simple field?