If anyone's interested, there's a massive project in Munich to expand capacity, improve performance, and reduce journey times on the suburban lines that run through the centre:
> To upgrade the S-Bahn system and to reduce the traffic burden on the existing core line, two new tracks will be built parallel to it between the stations of Laim in the west of the city and Leuchtenbergring in the east, covering a total of about 10 kilometres. The core of the new east-west connection is a 7-kilometre tunnel linking Munich's main station Hauptbahnhof with the eastern hub Ostbahnhof.
jahahaha, you should have also mentioned that zwei Stammstrecke will make it horrible long to switch from platform 1 to platform 2, through elevators 40m up + down on each side, forcing you to go completely upwards, and then going down again.
Apart from fire security, most people will just hate it :-)
> zwei Stammstrecke will make it horrible long to switch from platform 1 to platform 2, through elevators 40m up + down on each side, forcing you to go completely upwards, and then going down again
Are the connections between the faster and the slower lines going to be equally bad at all five connection points (Laim, Hbf, Marienhof or -platz, Ostbahnhof and Leuchtenbergring)?
#/media/File:Netzplan_S-Bahn_M%C3%BCnchen_Zweite_Stammstrecke.svg){kind=link}
https://www.2.stammstrecke-muenchen.de/home.html
> To upgrade the S-Bahn system and to reduce the traffic burden on the existing core line, two new tracks will be built parallel to it between the stations of Laim in the west of the city and Leuchtenbergring in the east, covering a total of about 10 kilometres. The core of the new east-west connection is a 7-kilometre tunnel linking Munich's main station Hauptbahnhof with the eastern hub Ostbahnhof.