Couple of thoughts for Williams some time: If they have access to the former K-Line tooling and dies on freight cars, the woodside caboose would be a good candidate. Most railroads had them, built early in the 20th century but some lasted to the end of steam and some until the end of cabooses.
How about those K-Line scale reefers; Maury was just getting them going when someone pulled the plug. K-Line also had some really neat trucks, some with the "finned" wheels that were used in the early part of the last 100 years. K-Line's cars even had detailled interior loads.
I know that Williams has their own tooling for passenger cars, both the streamlined (aluminum) as well as the plastic, 18" heavyweights. But if they decided to offer the K-Line version along with their own, they could really offer some variations. I'd be in line for some of those. I once spoke with Maury (actually with Nick Ladd) about offering a "fast mail" train of about six to eight cars, using RPO's, baggage or storage cars, express cars and one or two coaches, in a number of different road names. With the combination of both sets of dies and fixtures, they could offer some really neat trains with lots of prototype authenticity and with a lot of different road names.
Larry; are you hearing all this???
Paul Fischer