Haha haven't actually seen 7" carplay full-screen. Since most pictures are complains about the 10" screen with 7" carplay.
That being said the petition is terrible, I like the effort but the numbers a way too low.
But afaik the whole system will be revamped with Mercedes Me and new options to the MBUX. So I guess end 2019 or 2020 we will get some actual good stuff for the Mbux system.
Will this update be for the existing MBUX or for the new production version?