[bobthepanda]

Most other subways will just stop services on a segment and use buses to fill the gap.

New York is rather unique in that the subway was engineered, or rather over-engineered, to be able to reroute trains. (E.g. This E train will be making local stops in Queens and running over the M line to West 4th St.

[NikolaeVarius]

I mean the MTA does that too

The N/Q into Astoria, the F line in Downtown Brooklyn

[bobthepanda]

What I mean to say is that the level of changes the map needs to reflect is pretty much only useful to New York, since they are the only system consistently rerouting trains rather than stopping segments entirely.