I know this has been mentioned before. Some people think it would be handy to save an SVG file from Inkscape as an XCF maintaining layers. I was going to have together a quick output extension in python and an accompanying script-fu for the gimp to make this happen, but I don't think we have the appropriate export options.
It would be really fun to have a single command to export all the layers at once to something like filename-0001-layername.png, but I don't know how widely applicable that would be. According to the man page, --export-id forces the object's bbox for --export-area. I think this makes what I want to do impossible. I would suggest we make canvas size ALWAYS default and add an --export-bbox option. This would mean more typing for the people who already use this functionality, but it would IMHO make more sense overall.
Aaron Spike