Some good comments coming in, thanks for that, and keep them coming.
My initial comment on the diagram itself is that I find it difficult to differentiate between the light blue and the grey until I've zoomed well in - unless you're holding back other colours for future layers, might a greater contrast be possible?
I'll hold that thought if lots of people are affected. Neither have PAYG today so it's not disasterous if they are mixed up.
Probably something that will be coming anyway, but where a blue and a grey line diverge, it would help to name the junction station, e.g. Leatherhead and Hurst Green.
All stations outside zones 1-9 will be indicated when finished. The un-published version includes all of Essex and Kent, I'm working round clockwise.
One question that came to me, does it have both branches of the Elizabeth Line east of Liverpool Street, and should it have?
Personally I think not. There are a lot of lines, particularly in South London, not shown because the focus is on the beyond zone 9 area.
Coming from that though, is that light blue is for 'coming later this year' and grey is 'sometime or never'. Should the latter differentiate between 'expected at some time (maybe, and no idea when)' (which of these should be included, given the amount of speculation over Project Oval?) and 'no current plan or intention (i.e. never)'? Should lines in the latter category be shown where appropriate (they have links both ends, e.g. Tonbridge-Maidstone), or just have pointers as they leave the PAYG area? What happens when (as might well happen) there's an announcement that 'these stations are getting it at this date in 2025, these at this date in early 2026 (although for some we did 2025), and these later in 2026)'?
The map includes all lines shown on the 1st post of the main thread on here. As an when there is an announcement confirming new plans then I will look to incoprorate that announcement in the map. AFAIK the last announcement on gov.uk was end of January confirming those that went live on Feb 4th and those that would go live later in 2025. If there is a more recent official announcement then please let me know.
There are a lot of lines (not just stations) - both NR & TfL (LU, LO, etc.) - within 'the zones' (inner greenish area) not shown, and this fact needs to be clearly stated - with a pointer as to where data can be found.
Stations is clearly stated, I could also mention lines, will think about that. I'm also considering a within zones 1-9 full map and will link to it when it becomes a reality. The wider Southeast is currently my focus.
Should there be a distinction between the inner zones (1-6, essentially Greater London) and the outer ones (7-9)?
Possibly, though it will complicate matters a bit. It's filed in the potential enhancements box at the moment.