Where would it layer in? What's special about the 67? Give us some details and sell us on it =-) Pretend you made the loco and REALLY wanted us to buy it from you.
ok Also the 67 Is what ive seen before but they could add a livery for the steam variant. And the 67 is one of the best locos and would make the game nicer as it goes on many routes.
Why is it the best? I don't even know what it looks like. Explain it to me. What would it layer on? What new stuff could you do with it you can't do with a Class 66? Not trying to be mean, but if you want something bad enough, you have to work to convince people. =-)
67s hardly do anything now apart from the daily TfW Mk4 runs which is the only thing stopping DBC from completely withdrawing them from service! I'd probably pick something else over a 67 for another diesel loco being brutally honest.
AI only 67 hauling mk 4 coaches usually runs Holyhead to Cardiff Central and Manchester Piccadilly to Swansea/Carmarthen/Milford Haven. It would be better to add them to the new Manchester Piccadilly to Alderney Edge route calling at Stockport and Wimslow.
Don't be discouraged. Just helping improve the suggestions. There has to be merit there, just a matter of finding it.
For a Class 67, you'd need a route set not long after they were introduced to make it truly viable. The work they were designed for pretty much disappeared a few years after they entered service.