I just going to give a reason for every underground route.
Bakerloo - Curious as to how they will do they WCML on the overground.
Central - 1992 stock would be cool, see if they do ATO, and the juntions at liverpool street and other junctions.
Circle - Love to see a variety of LU stocks going past, like the C stock, A stock and D stock. The junction at High Steet Kensington, how dark it would be between Farringdon and Kigs Cross.
District - Love to see how it runs through Hammersmith & City line.
East London Line - Would be awsome. And see the juntion for New Cross Gate or New Cross and see Southeastern mainline at New Cross because it's my local line.
H&C - Love to see the variety of trains, and it would be cool to see all the viaducts in the game.
Jubilee - Like you said it would be intresting to see how accurate the sounds could be and the PED's. Would love the signaling, and the announcments are cool.
Metropolitan - Pretty much what you said, and the A60 stock would be good, but I would like to see how they do the A60 and 1973 stocks going past.
Northern - WOW! My favourite line to be honest love the sounds of the trains sounds like a faint version of the Class 375, awsome. Plus the old signaling. Cool to go into Morden Depot.
Piccadilly - Cool to see the D78 stocks and A60 stocks go by D78's at Baron Court. And they would include the Heathrow Terminal 5.
Victoria - Again ATO would be cool, and the end of the line buffers, depot: northumberland after seven sisters. Plus bwing able to use the 2009 stock.
Waterloo And City - Prob to come out with anouther root becuase of how small it is but it would be cool to use.
Overall for all lines: Love to drive the stocks and especially the older stocks such as; Bakerloo - 1972 MkII or 1938 stocks.
