I am working with Lopes on a document or series of documents about the fauna and flora of the maps (biome).   For now I am focusing on Copan in the highlands as a practical example.   In my research I have found 2 animal species that no one took into account in this discussion.  

The game lacks order and some coherence among its gameplay features. The problem of citizen soldiers who don't know when to be soldiers and when to be citizens. There are people who complain that sometimes when you're attacking you make a mistake and press the wrong button ( or you give wrong or DER with mouse pointer)and the soldier system starts collecting instead of attacking.

Someone took the time to talk about the project, about a different approach.   

Twenty years after its founding, 0 AD has been one of the most ambitious open source projects in the gaming world.   It's a game that competes with giants in its field.

Yes. At least that's my impression, I don't do SP myself. Looking at the download numbers of the last entry in the dispute thread I don't get the feeling that it's inactive.