@wackyserious & @wowgetoffyourcellphone and others interested in Gauls and Britons.
I noticed 2 mistakes in the Gaul Hero units:
Brennus, a hero for the Gauls, is using a Brittonic Celtic helmet, namely the "Waterloo Helmet" which was found in London
Viridomarus, a hero for the Gauls, is carrying a Brittonic Celtic shield, namely the "Battersea Shield", also found in London.
The Waterloo Helmet (Celtic Britons, London):
The Battersea Shield (Celtic Britons, London)
Celtic Britons:
Cassivelaunus, an important British chieftain. Why isn't this guy, who led the defence against Caesar's second invasion of Britain in 54 BC, a hero for the Britons? Instead we have the anachronistic Boudica, Caratacus and Cunobeline, who are literally all from the wrong time-period?! I'm all for widening the current time-frame of 0AD, but why only for the Britons?
Both the helmet and the shield are famous, which makes these mistakes rather noticeable... In addition, the Celtic Briton heroes look a little underwhelming compared to the Gallic ones, which makes the using the epic Brittonic reference material for the Gauls more questionable. There's plenty of epic Gallic references to use for Gallic Heroes.
Mainland Celts, good references for Gauls:
Celtic Raid on northern Greece
Hallstatt
Celts attack Etruscans in northern Italy