I dislike how this map is presented as almost official. The author does not seem to have any relation to Berlin traffic authorities. This should be framed clearly as a proposal.
Also it's Berlin where people generally feel they own the city and everything in it, corporations and government only coming second.
If someone makes a map and a majority starts using it... guess it's our map now.
Knowing the image the BVG and S-Bahn generally try to project, I can even image them rolling over if people say they like that map. Unlikely, but we'll see if it gets mainstream attention.
Source: Born and raised in Berlin.
IMO quite irresponsible.