Right now I can play 0ad like AOE, which is cool. Apart from that, I am more interested in playing battle mode (with military formation enabled) against my friends. I do not want to spend too much time on developing economics stuff.  Therefore, I am curious is there any config flags in e.g. 0ad/config/ can be applied for such setup? I suppose no. Or is it possible to configure and compile the source code so that only battle units are setup? Thanks

Sure, but this is an art task.

That sounds interesting, but why stop there? Historically, each minister would be in charge of a different part of ruling the empire, so each could have different statistics, similar to heroes, but not any specific person from history.

NNNNOOOOO!!!!!!! Another brave soldier has fallen in battle, the brave war we wage for freedom, historical accuracy, and fun. Farewell, brave Decide4u, we will honor your memory.

In DE, they give all of your capturable buildings more capture points. They also heal nearby units and you can train Elite Healers there of their specific culture. From the Greek ones you can train the healer hero Hippocrates (only once) and research Oracle of Delphi. I'd like to come up with healer heroes and 1 special tech for each cultural shrine. In base game, they just heal nearby troops and you can train healers from them. They're basically capturable temples in that case, but with no techs.    It would be nice to be able to include these and other things, like Cultural Artifacts and Mercenary Camps, in random maps, toggle-able by the game host like how Catafalques can be turned off and on.   In DE, Cultural Artifacts give you a trickle of glory resource. In base game, perhaps a buff to capturing.    In DE, Mercenary Camps give you the ability to train 30 mercenaries, which cost 0 population, specific to the culture of the camp. There's also a camp which trains mercenaries specific to the civ you are playing. Each player has one of those civ-specific camps nearby, while the cultural camps, based on where the map represents, are scattered across the map. 

Well they did conquer all the civs in question so um yeah lol But in all seriousness I do take your point, though I do not think having multiple roman civs is a good idea, it is better as they have done with the reforms technology that more or less sets up the late republic/early imperial era within the current early republic style Roman civ

I remember seeing one in Cycladelic Archipelago. I think they behave like temples but I have never had the honor of capturing one. Maybe @wowgetoffyourcellphone can elaborate.