Someone here already said a Lionchief J class and while I'm on board with that idea, how about some LC 2.0 versions of the gas turbine switcher/rotary snowplows? They've sort of got a start on that with those Lionel Junction starter set diesels as well as the old command control versions of the rotary plow turbines, but I'm not sure if fitting all of the LC 2.0 electronics plus a rotary plow on an engine that small is even possible.