I seem to be in a minority here. I think the new map is absurd. I mean - how many people are going to need a map that shows how the Croydon Tramlink intersects with the District Line and the Overground but omits to show all the other rail lines in the area?
I realize that the rail network in London is far too complex to show in its entirety on a pocket-sized map, and there isn't any perfect way to select which lines to omit, but at least the tube map of 10-15 years ago made some sense, in that it showed you those railways that went through central London (the Underground), as well as some of the most significant national rail connections between those lines. That's pretty useful information for a typical tourist or visitor, who's probably going to spend most of his time in central London. And at the same time it meant the tube map stayed relatively simple.
Now, as a result of TfL's desire to put everything they happen to run on the map, we have a much more complicated map (made worse by the number of routes that are now in the same colour). The particular selection of lines shown on the map may make sense if you intensely care who runs your train, but for everyone else who just wants to see the easiest way to get to their destination (the vast majority) it seems completely arbitrary. As a passenger, it's nonsensical for the line from New Cross Gate to Canada Water to be on the map but for the line from New Cross Gate to London Bridge not to be. This looks to me like a map designed for the benefit of TfL managers who can see how big 'their' network is, rather than for passengers, who need a map that shows them some useful and rational subset of the lines in London.
I don't even think the new map looks aesthetically very attractive. Aside from being now too complicated, to my eyes, the inclusion of Tramlink makes the map look unbalanced, taking the focus to some extent away from the centre of London where the tube map is at its most useful.
Definitely not impressed