A 4v geodesic dome requires struts of six different lengths, while a 3v dome needs only three. (If you really made that model you should know that.) Try to build one for real, and you'll see it's a big difference. The missile racks are a remake of models I've build with traditional techniques a half life ago (...in the days when we had to work with wood and/or garbage to create tabletop accessories), but CAD software plus rapid prototyping made it much easier to create a svelte socle for them. Oh, by the way, I suppose it's just a fortuity that the pedestal for your missile turret looks basically exactly like a Calliope Tower (as seen in Mechwarrior 4)? (^_^)/"