San Juan or similar replica would be the answer. Then you could do charters with the vintage set of passenger cars. Also you could do mega charters using the passenger train to carry the charter participants, and do a following freight deal. Image the runbys sometimes with a passenger train and a freight! I guess thats way down the road still though. If we had 478 we could do a mixed on the Chili line with a coach and a combine, or baggage car! Except of course it would not be on the old line to Santa Fe.
Greg