Fixed layout publications require height and/or width to be specified in the content documents meta viewport, which I assume is why an error is thrown

This does not seem to be a requirement for publications that are not fixed layout publications. The tools we use currently generate and validate <meta name="viewport" content="width=device-width" />. Could the HTM_047 ("Html viewport is missing height and/or width.") validation throw a warning instead of an error if the content document is not a fixed layout document?

(I'm using 4.0.0-alpha9-SNAPSHOT)