We're running some tests on modernizing the extremely archaic and useless mobile ad units by utilizing google's responsive tags that will tailor the ad dimensions to the current standard ad sizes that Google serves for each class of mobile device these days. The old ad units didn't even fit the page layouts at all, generated almost zero revenue because they were designed for older low res devices primarily and are no longer really even used by advertisers, and those static-size tiny banners looked absolutely ridiculous when viewing mobile-gaf on tablets.
These responsive units should display standard desktop banners when viewing mobile-gaf on a high resolution tablet, which is totally appropriate and looks a hell of a lot more aesthetically sensible than a big empty bar with a pinhole ad in the center, and on high resolution smartphones the tags should utilize a moderately sized banner at the top of the screen and then a rectangle footer ad below all of the content and navigation controls. Yes, the rectangle is a little scary looking at first glance, but as it is below all the content and navigation controls it is not actually interfering with user experience to any significant degree that I can discern.
It's still two ad units, one above all the content, and one below all the content, and no shitty anchored ads that scroll with you, or interstitials, or any of that nonsense. Mobile-gaf was basically not monetized at all with the ad units it had in place, and these current-gen ones don't appear to harm user experience and also conform to the site layout better. If you have legitimate concerns here about user experience, feel free to provide feedback on that front.