I was just browsing around this thread again, and honestly, looking back at this image, it seems to me that it is really close to the Ferrari/Merc/Aston concept. It's just very "immature" and completely devoid of details. However the general philosophy is something the FIA seems to have predicted themselves with this render. Downwashing sidepods that keep the undercut undisturbed all the way to the diffuser, while also utilizing the same diffuser hole the aforementioned 3 teams (plus RedBull) are using.