Does anyone know if there any plans to build any new stations and/or extra platforms to link up some of the existing bits of rail infrastructure in the London area? Some of the proposals/ideas below are more ambitious than others, but here's a list of some possible interchanges. Broadly, they're listed in A to Z page order, starting in NW London and finishing in the SE.

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Fantasy Stations
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1. Draycott Avenue (Northwick Park): Bakerloo, Chiltern (Aylesbury line), Metropolitan
2. Peel Centre (Hendon): Northern, MML
3. Harringay Green Lanes: ECML, Goblin, Piccadilly (via travelator) to a new station.
4. Durnford Street (South Tottenham): GEL (Enfield Town line), Goblin, Victoria via travelator to Seven Sisters
5. Jarrow Road (Tottenham Hale): GEL (Lea Valley Line), Goblin
6. Walthamstow Queens Road: GEL (Chingford line), Goblin, Victoria
7. Blenheim Crescent (Ruislip): Central, Chiltern (High Wycombe line), Metropolitan
8. Wood End (South Harrow): Chiltern (High Wycombe line), Piccadilly
9. Wembley St. Johns: Bakerloo, Chiltern (High Wycombe line), WCML
10. East Neasden: Chiltern, Jubilee, Metropolitan, KC
11. West Hampstead: Chiltern, Jubilee, Metropolitan, MML, NLL
12. South Hampstead: Jubilee, Metropolitan, WCML
13. Belsize Park: MML, Northern
14. Chalk Farm: Northern, WCML
15. Rosslyn Hill: NLL, Northern
16. York Way (Camden): ECML, NLL
17. Cedar Way (Camden): MML, NLL
18. Tufnell Park: Goblin, Northern
19. Hackney Central: GEL (Lea Valley Line), NLL
20. Leytonstone High Road: Central, Goblin
21. Balmoral Road (Manor Park): GEL, Goblin
22. Park Royal: Central, Piccadilly
23. East Ealing: Central, District, GW
24. Harlesden: Bakerloo, KC, WCML
25. Old Oak Common (Acton): Central, GW, KC, NLL
26. Mitre Bridge (Willesden): GW, WLL
27. Silver Road (Shepherds Bush): HC, WLL
28. St Pauls (Central/Thameslink)
29. Shoreditch High Street (ELL/Central/Gt Eastern)
30. Rainhill Way (Bow): District, DLR
31. Ivy Crescent (Acton Green): District, KC, NLL
32. Thames Road (Chiswick): NLL, SWT (Hounslow Loop line)
33. Southwark: Jubilee, SER, Thameslink
34. East Putney: District, SWT
35. Loughborough Junction: ELL (Clapham Junction line), SET, Thameslink
36. Croxted Road (Dulwich): SR (Peckham - Tulse Hill line), SET (Herne Hill - Penge line)
37. Brockley: ELL (New Cross Gate - Croydon line), SET (Lewisham - Peckham line)
38. Howson Road (Brockley): ELL (New Cross Gate - Croydon line), SET (Catford - Peckham line)
39. Tooting Graveney: Northern, SR (Streatham - Wimbledon line)
40. Streatham Junction: SR (Clapham Junction - Croydon line), SR (Streatham - Sutton/Wimbledon line)
41. Leigham (Tulse Hill): SR (Clapham Junction - Crystal Palace line), SR (Tulse Hill - Streatham line)
42. Penge: ELL (New Cross Gate - Croydon line), SET (Dulwich - Beckenham Junction line)
43. The Vineries (Catford): SET (Lewisham - Elmers End line), SET (Catford - Peckham line)
44. Selby Road (Anerley): ELL (New Cross Gate - Croydon line), SET (Crystal Palace - Beckenham Junction line)
45. Meadow Way (Beckenham): CT, SET (Crystal Palace - Beckenham Junction line), SET (Lewisham - Elmers End line)
46. Bickley Junction: SET (Bromley South - Swanley line), SET (New Cross - Orpington line)

There are bound to be some errors, but hopefully you get the general idea. Is there any chance of any of these ideas coming to fruition in the near future, or like Wood Lane, will it take the best part of 25 years to go from initial idea to actual completion?

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Abbreviations
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CT = Croydon Tramlink
DLR = Docklands Light Railway
ECML = East Coast Main Line (ex Kings Cross)
ELL = East London Line
GEL = Great Eastern Line (ex Liverpool Street)
Goblin = Gospel Oak to Barking line
GW = Great Western (ex Paddington)
HC = Hammersmith and City Line
KC = Kew to Cricklewood line
MML = Midland Main Line (ex St. Pancras)
NLL = North London Line from Richmond to Stratford
SET = South Eastern Trains
SR = Southern Railway
SWT = South West Trains
WCML = West Coast Main Line (ex Euston)
WLL = West London Line from Clapham Junction to Willesden Junction

Beyond that, there are similar places in the SE such as Farnborough, Edenbridge and Maidstone where a station to link passing railway lines might come in handy.