Much like the infamous "fake transparency" PNGs, I sometimes come across SVG files that are simply a bitmap wrapped in an SVG, which is very much not what I want. It would be a nice feature to be able to exclude these from the SVG image discriminator.
I'm unsure of the feasibility of this, but I suppose it could be done by scanning the XML to see if there's valid shape elements, or if it's just a bitmap.
