Stone Circles could be Gaulish Unique Improvement. I like the Oppidium idea, however, most tribes built defensive city-forts, to me not Unique enough to distinguish Gaul from other tribes. But hey, the above post proves that they'd work just great in the game. However, for their Unique Unit, besides the Swordsman who seems to have fallen out of favor and the Gaulish Chariot-which would be a ok, but not great... ...I've read about Gaulish heavy cavalry. Wore helmets and Gaulish-invented chain mail. Carried several throwing-spears (javelins) as well as thrusting spears, swords and shields. This would be a cool unit with a range 1 Ranged Ability before it switches to hand-to-hand combat (like the Persian Immortals) Other than that: Vercingetorix and Druids, abilities like Boris mentioned in his post above, more Gaulish city/village names (instead of Latinized ones), intro them in and let us play!-bet you a lot of players would find them fantastic tribe to play as.