I'm currently working on Extension:FileImporter, and interested in how the TemplateData approach here might be used to help us convert templates and parameters when moving files to commonswiki. Two questions jump out so far,
- How are templates mapped to one another when the names are different? Are you using Wikidata, e.g. [[d:Q5611625]]?
- What has your experience been with the "aliases" field for mapping parameters? Has there been discussion about increasing the amount of structure? Are many exceptions encountered?