Sometimes you run into problems with scenarios, that will have yourself asking, is this side really viable. Such a Regime are the Nomadic tribes and the Mauretanians. They have approximately the same amout of cities, and the same production output, almost. Compared to their other brothers (other regimes) they are about half the size of the average nation (measured in production points). This makes them pretty non-viable, even though they have been set as allies. They simply don't have the spare production to invest in PPs and other non-combat stuff.
So how to fix? Well, one solution would be to extend the map, but that would possibly lead to more nations that came into the same situation. Even if I did it, it wouldn't be an Ancient Europe map... it would be more of a North African/Europe map. Here is what I did. I made a trade route for each. Every turn, a caravan arrives and gives those two nations an amount of PPs.
But how do you balance this out, when there can be growth of economies (a post for later). You calculate the average production of all the regimes that are not themselves. That way they gain more PPs when there is more economy.
Here is a look at the results of one such Caravan. (Note the amount is randomized between two numbers that are manipulated from the above mentioned average).
However since I have still to make the Subformations and items (something that needs to be done before you can make a unit), I cannot really show them off. 
