For a tool that tries to fill in {{Information}} templates on commons based on the current, unstructured text, I have it fill in the "Date" parameter from the EXIF data of the image, if available.
I just thought: How about a new magic word, {{EXIFDATE}}, that would extract EXIF data from the image? It could be used in {{Information}} as a default in case no "Date" parameter is provided.
{{EXIFDATE}} would return blank on namespaces other than "Image:", of course, and for files that have no EXIF data.
There could be {{EXIFTIME}} and {{EXIFTIMEDATE}} as well, but that would be luxus :-)
Shouldn't be too costly for the parser (on image pages, image data will be needed anyway).
Anyone opposed? Anyone willing to code? ;-)
Cheers, Magnus