I would very much like to see Atlas re-run some of the models they have done before but not for a while - I'd love the Alco Century 424/425 in British Columbia Railway green (to go with the RS3s) and the GP-35 in Soo Line, Milwaukee Road or Chicago North-Western. Given the trouble they've had recently getting new products to market, something easier for them to do that gets nice locos into the shops in a reasonable time would be a worthy goal.
Regards, Bevis.