Most proposal's on here are for real life stock but here is something a little bit different From Wikipedia: British Rail Class 93 is the traction classification assigned to the electric locomotives that were to enter service as part of British Rail (BR)'s InterCity 250 project on the West Coast Main Line (WCML). They would have been capable of travelling at up to 155 mph (250 km/h), and powering a push-pull train of up to nine Mark 5 coaches and a driving van trailer (DVT), similar to the InterCity 225 sets. The locomotives would have been derived from the Class 91 locomotives that entered service on the East Coast Main Line in 1989, and would thus have traced a lineage back to the Advanced Passenger Train (APT) that was planned to run on the WCML more than a decade earlier. Tenders to construct the locomotives and rolling stock were issued in March 1991, with an expected in service date of 1995; it was envisaged that up to 30 complete trains would be initially required, with a total cost estimated at £380 million. However, the cancellation of the InterCity 250 project in July 1992 meant that the rolling stock orders were never made. The sleek, aerodynamic properties of the Class 93 would have allowed maximum speeds of up to 155 mph (250 km/h). The maximum speed however would initially have been 125 mph (201 km/h) because of signalling and track alignment limitations. Despite the trains not being built, this add-on would be both a unique addition and unusual to Train Simulator especially on routes like the ECML south and the WCML Trent valley where these trains would have operated if they were built and entered service. Class 93 Front End: Class 93 Cab: BR MK5 Coach:
Oh yes, yes please! Also, speaking of proposed multiple units, what about BR Class 157, 371, 381 and 471? I'm really glad you proposed this, I never saw the mock-up front end of it!
There is also a mock model of one of the engine cars at the National Rail Museum in York... small scale but good detail
DTG don't normally do fictional locos & stock. There is no point of reference in the real world apart from a few models
