Add spies, you can send them to another country to get some information like:
Army size, How much gold they have, How much gold they earn, How much they can recruit etc.
There is a chance the spy will get caught. But, the weaker the nation, the lower the chance he gets caught. If he got caught the country might decrease relations with you.
If a country sends a spy to your country, they will get your info and see if you're weak so they can attack you. If your country is strong, they might fail and you get a message that [country] sent a spy to you, then you can decide what to do: send insult, declare war, demand other stuff etc.

So, I've been thinking of adding AoC3. But ofc, we need to update AoC2 first, pls update it hehe. Any suggestions, guys?
I found this Korean who's giving suggestions about AoC3 and it's quite good. You cam see the complete replies under Martin Kovář's comment on Lukasz's community post about the Project:Alpha WIP on his YT channel.

It's a bit anoying to, let's say, have two French countries, that both have different nationalities. It doesent make sense that France 1 has to asimilate land from France 2. Isn't there any way to make a system like in Victoria 1/2, where every country has accepted cultures. Maybe we could have the ability to make our own cultures, and if we make new countries, we could have the option to asign them accepted cultures. The cores can stay the same, but when we make new scenarios, we could add to each province as many cultures as we think are necesary. Maybe when raising soilders, you could have the option from wich culture these soldiers should be.
That's my suggestion

Witam
 
Proponuję stronę partie. Nie muszą być jak w hoi4, ale mogą być takie takie:
Powiedzmy że jest polska w 1939 roku
i jak ona gracie to ma ideologię demokratyczną.
I cywilizacja, która ma na starcie jakąś ideologię, najlepiej, aby była dostępna najczęściej To chyba logiczne
Partia byłaby w zakładce "Dyplomacja '(po najechaniu na dany kraj) 
Tam była część partii demokratycznej, komunistyczna, faszystowska, republikańska itd. Partie Oparte byłby na ideologiach, nie musza  mieć jakiejs specjalnej nazwy. Pojawi sięby% poparcia
Oraz kolejna zakładka, coś w postaci tworzenia buntowników do tam przez było "dostępne zestawy" oraz wybieramy jaka jest wspierająca (oczywiście wspieramy w innych krajach). I przekazali byśmy pieniądze. Jeśli jakaś partia zaczęła się zyskiwać na liście i nawet przekroczyła popularność rządzącej, zależało na „ultimatum”
Kraj albo ma zmienić ideologię, czy wybuchnie wojna domowa. Stolica ustawiana byłaby losowo.
 
I to na tyle, dziękuję za przeczytanie 

As i think that there was a update from 1 month ago, there is still hope that Lukasz will still update the game, so I have got a suggestion that would improve the game, now as you see, some provinces have got no name, so it appears as fokus and on any map mode as "    ",  and provinces that have got this can't be clicked if they are the largest city of the country/civilization, e.x. Look at Cameroon, now look at the province that is in the north, you will see that it has fokus name and "    ", now when Cameroon's captial city has low pop like 10k-20k, this city could be its largest, if it is name is blank i won't know what province it is referring to because most of the provinces have got fokus, this suggestion might not be necessary, but it would help if i am searching for provinces.