Basil Jet wrote:

Does anyone else think it's surprising that Crossrail has yet to appear
as a dotted line on the Tube map or the London Railways map? Or the TfL
Rail map, for that matter.

Given all the other lines running through central London, and the fact that
all the outer sections are on, or alongside, existing routes, it may be too
confusing to show it before or opens.

The Jubilee Line Extension was dotted for 5
years or more, but Paddington to Abbey Wood is only 14 months or so from
opening. In fact, the Northern Line Extension to Battersea should be on
the tube map by now as well, in order to drum up business for the new
stations opening in 2020.

Most of the potential future users of fhe Battersea extension don't yet
live or work there, as the flats and offices are still just a huge building
site. Potential future users of the extension already know it's coming.