Right now, a good (possibly flat kit) of an Horizon/Comet II coach, cab and café. Possibly work on an etched detail kit to go with it.
Then an etched metal update kit for the Walthers PD5K hopper.
If these work well, other contracts could follow.
These would mostly be a private venture (I would pay for the models and material) but wouldn't be opposed to selling models and sharing profits if any.