Well, I have always felt that a modern DMU run layout can be simple to build, wire and scenic, and it does not get much simpler than this! I think the below photos show just that. The two three-way points are Insulfrog,  the track in the fiddle yard is recycled code 100 and the track on the scenic section is new code 75. The points are manual as they are both in the fiddle yard, so the only wiring is the isolating sections and the feeds. The fiddle yard will hold up to six 2 car DMU size units or equivalent trains. The entrance to the scenic area will be under an over road bridge making the three-way point almost invisible. There is just one platform with two faces and a stabling/engineers siding.