Is it possible to tie creation of titles to the level of technology, for example Legalism?
I have been thinking recently when playing how easily we (both player and AI) can sometimes create Kingdoms and Empires... isn't it a bit too easy?
How many new Kingdoms appeared in Europe after the start date and under which circumstances? I was in particular thinking of Eastern Europe here, Kingdoms didn't appear out of a thin air, in fact until very, very long time they didn't appear and instead there were Grand Duchies and unions of many duchies, ruled by Grand Duke. Both Rus before Kievan Rus, Kievan Rus itself, Grand Duchy of Lithuania and even Muscovy at that time. Surely, you can say attribute it to Lestva (rota) system of inheritance that was a cause of it, but on the other side we saw a definite lack of creation of central governments in these lands and a lack of a stable King-like authority.
So, if we think about it, then for the Europe-centered view Kingdoms appeared with 2 conditions: either they had enough "culture" (tech) or... like many other Kings, they received Crown from Pope, Church in a more general abstraction. It does not apply to petty kings for being petty and for most advanced realms, but for example for other realms like Poland, Galicia-Volhnia, Lithuania the religious authority compensated the lacking "tech"/institution to make a Kingdom. I trivialize a bit, but before embracing Catholicism there was no Polish
Kingdom and it was closer to Kievan Rus, being a band of duchies under what could be called a Grand Duke.
This bring us to the main point: Church, primarily Catholicism, played the hugest role in Kingdoms and Empires in start and middle games. HRE had no tech to count as Emperors by themselves, they critically were dependant on Pope. Many Kings had to seek Churches loyalty and approval... or, if they are strong enough, install loyal Antipopes. Thus, a player can't simply create with gold and prestige a Kingdom - he needs either a tech or Church giving him "Divine Right" to rule, enabling him as a king. It is a thing that should be comparable with most religions and regions, with major exception being Islam as I have little knowledge how it should translate into it. For Empires, including Byzantine Empire, it would mean that creation of Kingdoms within it's realm by vassals would be possible only if they are advanced enough (Greece, Thrace and maybe others like Georgia, but a freshly-conquered Alania).
How do I see it in gameplay?
- When inheriting Kingdom, you undergo relations check (with maybe some extra), in some casss Pope will make you pay money/install needed laws
- Creating a Kingdom is possible only with Religious authority approval (religious institution of monarchy, Divine Right) or with enough tech
- Antitpopes become more vital for countries like France
- Eastern and Central Europe is more dependent on Catholicism as a result
- More crucial role of (reformed) religions in creating Kingdoms
- Popes can give you another boon - they can motivate your expansion with by giving strong claims in foreign kingdoms/duchies which have no Catholic ruler (debatable point, but it shows what could be done)
- You're way more motivated to see Pope as Religious Authority, as it should be, and makes you want to either evolve to bypass it, become devout Catholic or try heresy/other religion in worst case.
With Orthodoxy it would work in another way... but well, it depends on how devs would rework it (if they plan to). Generally, Orthodoxy had way more trouble recognizing separate Kingdoms of it's faith and it was done only after they could install their own Patriarchs... but at least once established, the decentralized nature of this Church meant that other Patriarchs had way less influence on you, unless you controlled lands belonging to their Patriarchy.
I hope that such idea, about changing the way Kingdom and Empire titles are handed, is interesting and can find a way into the game.
I'll post it in suggestiong later.