Not a fan, really. If a dashboard has an agency’s branding on it, the agency would appear to be responsible for even more of the site’s performance and operation than they actually are. So when wix has a glitch (which happens with some regularity) it could appear to a client as though a designer is responsible for an issue they have nothing to do with.
In my opinion, it’s a concept that leaves designers in a place where they are unable to meet expectations.