Next to water towers, coal towers must be one if the most prolific structures that define the steam era. Yet we have very few options for a reasonably priced, well proportioned model in O scale. The GGD 100 ton model is probably the high water mark, but those are now hard to come by. Lionel has a nice cylindrical style concrete structure, but it is a bit diminutive. The old standby is the Plasticville model which while cheap and fun to kitbash, is not close to 1:48 proportions.
I'm thinking a 100 - 150 ton concrete structure that spans two tracks would be awesome. Something along the lines of the Walthers HO structure. Would anybody else be interested in a new coal tower option? What manufacturer us the most plausible to offer such a structure? Menards?