Finding Pontus interesting to play because of this lack of upper end unts. You have to mix and match well and focus more on economy and gold to fund mercenary army's. Not sure how historical this is.

As to roads....I always assumed not, except fairly localised to cities due to firstly historical notes noting the reliance on the sea to move anything. Secondly the histories of Alexanders conquest and the difficulties of movement/supply he encountered. If the persians didnt build them at the hieght of their power...would the greeks find it any easier?

Is there a half way house maybe in terms of roads, a not fully paved version that doesnt help movement but improves trade maybe?

Also in terms of Pontus....I havent noticed any references to the silk road.....doesnt this pass through the peninsular?