1. Create & delete custom countries and modify territory before starting the scenario
(I'm not talking about editors at all)
For example, the ability to select a 1200 scenario, add Korea to Anatolia, and integrate all Turkish territory into Korea before starting the game.
The ability to remove an Ottoman (or some territory of Ottoman) from the 1440 scenario and add an empty territory to Byzantine.
2. Add more commands
For example, if you enter money 50000 in the command, the treasury of 50000 won will be filled.
Corresponds to the yesman command in Europa Universalis.
3. Add culture
Ottoman, for example, has Greek culture on the European side and Turkish culture on the Anatolia side.
The ability to change the main culture from Turkey to Greece.
The ability to assimilate the culture into your own culture.
Ability to accommodate other cultures.
(AOC II currently only has a core)
4. Add Religion
In the Ottoman Empire, for example, the Orthodoxy would be the majority religion in the European side and Islam would be the majority in Anatolia.
The ability to change diplomatic relations.
The ability to change local religion to state religion.
If you can do that, I hope you added it.