template_entity_full.xml and template_entity_quasi.xml are two small, virtually identical files, both with only two children each:
- template_formation.xml and template_rubble.xml have no parent
- template_gaia.xml and template_trigger_point.xml inherit from template_entity_quasi.xml
- template_structure.xml and template_unit.xml inherit from template_entity_full.xml
The above is not reflected in the template file names. Because both entity files are only about a dozen lines long, it makes sense to deprecate them and merge the relevant lines into their respective children.