If you are really stuck for ideas and you decide to copy an existing map then please at least be smart! Nobody really needs a Mongolian version of de_dust with just different textures and the same boring architecture. If you really want to copy de_dust then try to make it original in your own way e.g. change some tunnels to open areas (and inverse), replace level-limitation-walls with cliffs, improve the variation in the main battle spots, add a new stealth way, mirror the layout or certain parts of it, or better still, change everything!