Edited map for Croxley branch

Well, it's no worse than an Alan Foale original, so you can give yourself a pat on the back for that: you're up there with the professionals!

But I would give you some pointers:
1) Don't edit official maps. I'm not saying this for legal reasons (although other people may do). The point is that editing raster graphics (e.g. PNG, GIF, BMP, PCX, JPG) is a pain and that even if you do manage to extract the vector image (e.g. SVG, AI) from the PDF, you'll find that it's not very good and hard to stay consistent to. It really is far easier to draw it all yourself. Which brings me onto...
2) Draw the entire network. This ensures that your neat segment fits with everything else. Trade offs happen. You can't be a total map fundamentalist. It's better to break the rules than draw something utterly barbaric.
3) Know what design principles you're using. These include angles, curve radii, line weights, fonts, whether labels can overlap the river, minimising kinks, and so on. You can decide what matters to you, but it is imperative to be decisive. And if something doesn't work, try again. Everyone has produced their horrors...
4) If you haven't already, do buy a copy of Max Roberts' "Underground Maps After Beck". This is an absolutely fantastic book that shows you what's already been tried and why. And, yes, it is by the same Max who posts here.

So welcome to the cartography addiction!

And if the Met were extended to Watford Junction, wouldn't that bring it inside a TfL zone?

You don't need the kink, it is not keeping with the style. Someone else may be able to link you to the '2016 Tube Map' where the Croxley Link is shown to give you an idea of how close you are to tfl in-house thinking.

Watford Junction wouldn't automatically be in the zonal system.

I used Paint Shop Pro a couple of times with reasonable results.

re 2025 map, are they going to dig a bypass round watford high street for met trains?

Not just Boris. All three local councils opposed the West London Transit which didn't help. Lack of central government funding for the Cross River Tram....

A rather large dose of optimism from TFL with regards to the 2016 map.

I do the entire thing in ITC Johnston. Bought it a while back, it's basically the old Johnston type face.

ITC Jonston has some differences with the proper versions, and it's kerned horribly. A good test for any Johnston immitation is to type in UNDERGROUND and see how many lightyears there are between the R and the G.

P22 has been updated recently, some things are better in the new version, some are worse.

You've got a copy of New Johnston? Naughty.

For vector graphics, I use Intaglio for straightforward maps (great software, almost worth getting a Mac just to use it) and Canvas for my more avante guarde designs, its bezier curves are great. Sadly no longer available for Mac, but I wouldn't touch Illustrator with a bargepole.

I did have the New Johnston font, but I lost it when I formatted my hard-drive and forgot to back it up x(

These schemes had to be alive, not conjecture to have bit the dust. CRT and WLT got to consultation and failed. Tramlink to Crystal Palace got onto the find-funding stage, and is on the shelf at the moment, thanks to PPP and the money pit that is Crossrail. Greenwich Waterside/East London Transit have been watered down, but that was under Ken.

No scheme has bitten the dust because of Boris - they bit the dust because they were either at best conjecture, or because they were ill-thought-out or because they were unpopular. Boris had to often say it, because Ken was too chicken too.Camden opposed CRT, Central Government opposed pretty much everything TfL came up with that the DfT hadn't... Boris' sins when it comes to transport are of omission of pushing projects, rather than that of stopping projects.This is the key - Ken was pushing this bit of spin, showing all the unfunded schemes that had been vaguely proposed (I'm suprised the DLR Horizon study stayed under wraps). Central Government's hatred of funding infrastructure, especially rail and tram added to Metrolink's collapse and Crossrail taking all of TfL's big projects budget for the next few years. The Crystal Palace area was annoyed when they found out that Crossrail would mean that Tramlink there wouldn't get funding.

Ken had all but scrapped things like CRT, TGT, Tramlink extensions and so on before he left office. Boris came and basically removed the spin and gave the reality. However Ken had vision, Boris doesn't seem to. There's pros and cons with both pessamistic-realism and optimisic-idealism - you want something in the middle.

The 2016 map is misleading anyway - bus schemes, tram schemes that are often vague lines (Wimbledon-Sutton wouldn't go via Wimbledon Chase, but rather Morden (making the tube challenge that bit easier)) that are shown as equivalent to tube lines. Crossrail was still on it's pre-Olympic 2013 date here, rather than the later date of 2017 given about a year later. Things like Watford and Shoreditch are still there, despite it being known at that time that Shoreditch would be under an embankment if Shoreditch High Street opened.

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On the subject of the Croxely link, this is held ransom by Central Government and regional policy - East of England have finally put the scheme high up it's list (the scheme only serves a small area on the edge of that region, likewise with Greater London). The problem is now Central Government giving East of England enough transport money to build it.

For the map, I think it's hard to do - there's not much space, and there's quite a few stations to get in. The zones really don't help with it. Ideally, I'd have a triangle, with a right angle at Moor Park. However unless the Sept09 style of map stays, that won't happen.

Not much - the No 93 bus runs between Wimbledon, South Wimbledon and Morden every few minutes. A tram wouldn't be much quicker, or more frequent.