I just published an update to an add-on, and it was approved without a review. Although I never got an email stating that it was approved. But the Chrome Web Store developer dashboard shows the new version as being published to both CWS and GS Marketplace. So, I guess I've finally got the new scopes properly set. This add-on does have the "external request" scope, but no restricted scopes. It wasn't instant though. It might have taken an hour or two. I didn't know if we'd ever be able to publish an add-on again without a review. Maybe it is reviewed, but done programmatically, if there are no scope changes.