Crossrail (which it should always been known as IMO and not the Elizabeth Line {Meaning a Tube Line which it isnt as it a National Rail service therefore Should Remain as Crossrail}) will be helpful as contrary to some belief it will take some pressure off the Central Line between Stratford and the West End as given the Cross Platform interchange at Stratford between Central Line and TFL Rail services, most on the Westbound Platform in the Morning peaks have alighted from a TFL Rail service to continue into London, however if the same train you have alighted from continues to say Tottenham Crt Road or Bond Street you are not going to get off and join the what will be slower Central Line, in fact by timetable comparison, the Central Line does Stratford to Liverpool Street in the same time as a TFL Rail train does in its timetable but if you want the West End, or say Farringdon, Crossrail will be significantly quicker to these points as wont stop as often, however i wonder if once Crossrail opens, whether or not TFL will visit suggestions/calls to build Shoreditch High Street on the Central Line for Interchange with LO ELL services (though this would have to be built with Platforms like Holborn), so in theory Crossrail will be a success, at least in the London Zonal Part, im not sure of the impact it will have upon the Maidenhead/Reading branch but will definitely improve GEML Metro capacity and alleviate Central Line trains, possibly even take some strain off the Circle and H& City Lines