Contrary to some critics above, L3 up to 40mph is actually pretty good. It means you can get a decent L2 system (not worse than Tesla’s) on highways and other 80-90km/h roads, and switch to full L3 when you are in the city (where it is mostly limited to 50km/h anyway, that is, under 40mph), where driving can be pretty boring and take a long time with traffic. So I don’t take it as « a super limited L3 », I take it as « L2 with a L3 in bonus in city center ».
Also, whoever was commenting that Mercedes « is doing the law in Germany based on what they have », care to provide more references to this? Germany, much like other EU countries, use UN regulations, which Mercedes has as much power to influence as any other car manufacturer that cares to extend them.