To save you a bit of time: Dragonscale, steel grade, bit lighter, firesafe.
// fake creature for epic armor
[CREATURE:DRAGONSCALE]
[NAME:dragon:dragon:dragon]
[USE_MATERIAL_TEMPLATE:SCALE:DRAGONSCALE_TEMPLATE]
[SELECT_MATERIAL:ALL]
[MATERIAL_VALUE:15]
[ARENA_RESTRICTED]
[DOES_NOT_EXIST]
// dragonscale. temperature immune, steel grade, light. perfect leather material.
[MATERIAL_TEMPLATE:DRAGONSCALE_TEMPLATE]
[MAT_FIXED_TEMP:10067]
[STATE_COLOR:ALL_SOLID:GREEN]
[STATE_NAME:ALL_SOLID:scale]
[STATE_ADJ:ALL_SOLID:scale]
[STATE_COLOR:LIQUID:GREEN]
[STATE_NAME:LIQUID:dragonscale bug]
[STATE_ADJ:LIQUID:dragonscale bug]
[STATE_COLOR:GAS:GREEN]
[STATE_NAME:GAS:n/a]
[STATE_ADJ:GAS:n/a]
[DISPLAY_COLOR:6:0:0]
[MATERIAL_VALUE:30]
[SPEC_HEAT:500]
[MELTING_POINT:NONE]
[BOILING_POINT:NONE]
[SOLID_DENSITY:1850]
[LIQUID_DENSITY:1980]
[MOLAR_MASS:55845]
[IMPACT_YIELD:1505000]
[IMPACT_FRACTURE:2520000]
[IMPACT_STRAIN_AT_YIELD:940]
[COMPRESSIVE_YIELD:1505000]
[COMPRESSIVE_FRACTURE:2520000]
[COMPRESSIVE_STRAIN_AT_YIELD:940] 160
[TENSILE_YIELD:430000]
[TENSILE_FRACTURE:720000]
[TENSILE_STRAIN_AT_YIELD:225] 200
[TORSION_YIELD:430000]
[TORSION_FRACTURE:720000]
[TORSION_STRAIN_AT_YIELD:215]
[SHEAR_YIELD:430000]
[SHEAR_FRACTURE:720000]
[SHEAR_STRAIN_AT_YIELD:215] no data, used 200
[BENDING_YIELD:430000]
[BENDING_FRACTURE:720000]
[BENDING_STRAIN_AT_YIELD:215]
[STATE_COLOR:ALL_SOLID:BLUE]
[IMPLIES_ANIMAL_KILL]
[LEATHER]
[ITEMS_LEATHER]
I did it like this in masterwork, but I dont think it will be entirely feasable for Genesis. I replaced all megabeast corpses with itemcorpses, and added a new workshop for it, the slaughterhouse. It always gives 1 trophy (to put in your display stand), 1 legendary skill reward and 1 practical item, like the dragonscales in this case.
[REACTION:BUTCHER_MEGABEAST_DRAGON]
[NAME:Butcher dragon corpse]
[BUILDING:SLAUGHTERHOUSE:CUSTOM_D]
[REAGENT:A:1:TOOL:ITEM_TOOL_DRAGON_CORPSE:INORGANIC:NONE]
[PRODUCT:100:10:SKIN_TANNED:NONE:CREATURE_MAT:DRAGONSCALE:NONE][PRODUCT_DIMENSION:150]
[PRODUCT:100:1:TOOL:ITEM_TOOL_DRAGON_TROPHY:INORGANIC:BLANK]
[PRODUCT:100:1:TOOL:ITEM_TOOL_AETHER:INORGANIC:PLATINUM]
[SKILL:BUTCHER]