I've read a few comments regarding services using the adjacent WCML, but of more significance is that the Bakerloo Line has shared track use with the Watford DC lines between Queens Park and Harrow & Wealdstone. Although DTG won't comment on future routes/DLCs until their announced release, I'd be interested if there has been any consideration given to including service from London Euston - Watford? In some ways it would be interesting to know what the capabilities of TSW2 are to integrate this kind of expansion/extension/crossover with further routes/DLCs? On London Underground alone their are many lines that either have shared track/station use or parallel running with both other LU and Network Rail lines.