This could be a new setting in Settings → Files and links that determines which template is used for new notes—however similar feature is already implemented by the Unique note creator core plugin which is not enabled by default. It is not obvious what templates are useful and should Obsidian hard code file metadata to the YAML block or not. I think using Unique note creator is a good long term solution since this approach separates notes created from links.
The topic is broad because file templates includes the YAML block. More useful topic would be to discuss about default properties for new notes. That topic is separate from file templates used to create notes. See also Make file metadata and properties separate concepts