I'm in a trouble that needs some help and more than one single head thinking. I'm (re)starting the works in my layout, Since I have AC e DC locomotives, I'm going to have two separated circuits, of course. Now, my idea is to recriate a portuguese scenery with DC, since I only have portuguese locos and the german scenery with the AC, since there i only have german things. My doubt is: how to do a layout like this? I thought, for instance, to have a level 0 for DC, with the portuguese scenario and then the AC layout in the levels 1 and 2... but this is just a wild guess... what ideas could you give me to solve this problem?