Hello Kriszme - the transparencies are a big "plus" on this model, as it was properly designed to use them. I'm not so convinced about the window frames, as they are unpainted and look too flat. However, as the color match the yellow brick quite well, I used them. It will be different in Wroclaw...
@ Erik - Thanks
The main entrances are at a higher elevation. I used a lot of card bits to ensure that the outside platforms keep horizontal and at the correct level. As the GPM paper is very thick, I eliminated most of the tabs.