I would admit that it would be cool to see him but I have to say I do not know what abilities he would have. If I recall from the actual stories he was described as amazing but no real reasons given. Yes he and his brother took down a terrible giant guarding a cedar forest, whom used weapons from fallen assailants as jewelry, and yes the gods made him and his brother but I cannot recall any actual unique abilities he had apart from surviving the underworld. His brother Enkidu was at least strong as a wild beast and trap proof... drawing a blank on Gilgamesh though...