Cartimandua would make an excellent non-combat hero, and unique. As Queen of the Brigantes, she was allied to Rome. Her bonuses could actually be tied to being allied to non-Celtic factions. If possible, say, something like being able to recruit a foreign unit/units, depending on the ally/allies (maybe she can have a unique structure that does it? No clue), representing things like when Rome sent a cohort to defend her from her former husband, or just some kind of broader generic bonus, but something the Britons otherwise wouldn't have access to on their own. 

Thanks for the tips posted in the thread. I beat my first game solo vs Medium AI (Random/Iberians) as the Romans. I still emptied the berry bushes around spawn before building Fields. (They lasted until the Town Phase.) Not sure how berry bushes compare to Fields. Add: I have a tough time building calvalry because they don't contribute to the economy much beyond hunting.  

Thats correct.

Looks like the ones for the gladiators, in vanilla atlas-only unit and in DE trainable from the colosseum? Are you taking the pics from above in atlas with "ground" activated? Looks like they are cut off below the mouth

346 Athenian Hoplites, at least he made 33 ranged units.