On demand, I'm very tempted to go for the Aedui as a Gallic faction (since we already have an Arverni AAR), especially as the Lusotannan high morale, high casualty fighting scares me.

(yes, I feel like a battle's been lost because I suffered 10% casualties.)

However

It will be Lusotannan.

Name: Circle of The Barbarians

Opening quotation

Και τώρα τι θα γένουμε χωρίς βαρβάρους.
Οι άνθρωποι αυτοί ήσαν μια κάποια λύσις.

And now what shall become of us without any barbarians
These people were a kind of solution.

- Konstantine Kabaphes (1904)