Specifically, I want to disable component resize for certain components which look bad when squished using Layout. These are components with more complicated html and already have a responsive design strategy. Ideally there could be a property in cq:editConfig such as cq:layout = nolayouting
Nope. Never figured out how to do that. One work around is to design templates using a combination of parsys and responsivegrid containers. The parsys policy would allow components that don't support Layout.