Malays game and vigor as a oriental (wouldn't say wild) by old gamefowl by crossing (preferrably the rare blue) Sumatra stag with a malay hen and breed the cocks game and vigor into the pullets. Then making a working hybrid with far less holes in the genetics. (Health, prone to diseases, defects not visible). May take a good several years of first two of crossing then line and inbreeding and possibly infusions of the out ward crosses. No?