Speaking of nation/faction roleplay, they are a bit different.
Nation roleplay is where you manage your nation, kingdoms, empires, or vice versa. You manage the region, population, economy, culture, or any desired stats from the Game Master. Nation roleplay is also known as Geopolitical roleplay especially by Discord realm and mostly roleplay with real-life nations and maps (Earth). Nation roleplay is also known as Astropolitical roleplay, where you manage the planet colonies and same stuff.
Apparently, there are popular nation roleplays, such as NationStates and Cyber Nation.
While faction roleplay looks more focused on troops and arsenal management. I don't know more about this roleplay, like how do we construct the base, train troops, destroy, gain loot, prevent the troop from the opness, vice versa.
This is where my main problem is since 2017. A person suggested me to use kinds of points, and they did not work out whatsoever. My roleplay was like oh my god, this is way too complex! If I were him, I would study coding and develop games and get money from Mr. Gaben's site.
I only know that we can make the factions and roleplay from Cosmoteer game, as it provides infinite ship design ideas to make and infinite mods to load (if your pc is strong enough to load them especially Abh).