There have been various suggestions for ways to enlarge the Merseyrail network lately. Some would extend beyond the current area, whilst others would use existing lines or track beds, i am in regular contact with nick scales who is head of merseyrail so i get most of my info from him as well as others i know in merseyrail. below is just about everythink that has been proposed to be done by merseyrail in the future.
Third-rail electrification has been suggested for many lines, of which the Borderlands Line from Bidston to Wrexham, adding another branch to the Wirral Line, is perhaps the most likely. Electrification from Ormskirk to Preston would re-establish the most direct Liverpool-Preston route. This, coupled with the reinstatement of the Burscough curves, would allow direct Preston-Southport and Ormskirk-Southport services and provide an alternative Liverpool-Southport route. Another possible extension of Northern Line services, filling in a gap in the electrified network, would be from Kirkby to Wigan Wallgate. The reconnection of Skelmersdale has also been proposed "requiring two mile rail restoration to re-establish link to town of 35,000". This is presumably the Skelmersdale Branch line to Rainford Junction on the Kirkby to Wigan Wallgate line.
The re-opening of part of the North Mersey Branch line between Aintree and Bootle New Strand stations to passenger services is included in Sefton's transport plan. This would involve using Sefton Junction and would enable the reopening of Ford and Linacre Road stations ending at aintree this could be good for race times as passangers would be able to get to aintree from main city lines as this north mersey branch could be connected to the canada dock branch witch joins onto edge hill station and from there it has been proposed the line would run down the waterloo tunnel to join to the city centre loop line with new stations along the waterloo tunnel such as 'Royal Hospital' 'London Road' 'Metropolitan Catherdral' and 'Scotland Road' which is in the cutting on byron street.
During the construction of the Link line in the 1970s, provision was made for an underground junction south of Liverpool Central station. This was to access a new tunnel, via a new underground station at the University of Liverpool, then joining the Waterloo Tunnel to provide a connection to Edge Hill. Further electrification works would then have meant some City Line services (e.g. from St Helens Central) could have been connected to the Merseyrail network. An Act of Parliament was passed in 1975 to allow the construction of this scheme, but it was never built. Restarting this sceme is in talks lately.
The Canada Dock Branch (currently a busy freight-only line) is in talks to be reopened to passengers, allowing the reopening stations of Spellow, Walton & Anfield, Breck Road, Tue Brook, Old Swan(Stanley) and Edge Lane stations. This would provide a connection from the Northern Line (south of Bootle) to Liverpool Lime Street and the City Line.
There is also talks to Re-Open the North Liverpool Extention Branch From kirkdale to halewood with stations along the branch which has been proposed to be: 'Queens Drive' 'Norris Green' 'Clubmoor' 'West Derby' 'Knotty Ash' ' Broadgreen' 'Childwall' 'Gateacre' and 'Woolton'
Kirkdale Station is to have a huge update again with 4 new platforms for the canada dock line and north liverpool extension line, also liverpool central will have a huge update with 2 more platforms being added.
The wapping tunnel is to be reopened starting with a new station at the new arena at the docks to edge hill with stations along the way of 'Anglican Catherdral' and 'crown street'
Other new stations iav not mentioned yet being proposed are:
'Wavetree' (Same possitions as closed one)
'Liverpool Airport' (from liverpool southparkway)
'Otterspool' (Same possitions as closed one)
'Ditton' (Same possitions as closed one)
'St James' (Same possitions as closed one)
'Deeside Industrial Park'
'Warren' (Same possitions as closed one)
and thats about everythink below is a map of the future merseyrail network to give you a better idea. it the bottom map on the page