Kingdoms: Why isn't anyone talking about cultural requirements for units?

[NagatsukaShumi]

Could this feature be integrated into the Grand Campaign?

Yes, however the prequisite would then rely on religion rather than "culture", so it'd make Crusading even more difficult. Should somebody port over the KoJ and PoA (Jerusalem and Antioch) it'd make things alot harder for them, it'd also stop the Muslims taking say Paris and creating their best units.

It's a very good new feature, certainly one of the better ones, though the codes available thanks to Kalmar Union deserves a mention, will let you change flags upon culmination of certain pre-req's

[King Bob VI]

I love how each of the campaigns has unique gameplay aspects like that, I can't wait for my copy of kindoms to come in the mail!

[IrishArmenian]

I love this feature, and the diffusion part is great! Diffusion being the part about bordering factions having small bits of their culture in your province.

[The Stranger]

is kingdoms worth it? 40$ i mean.

[SigniferOne]

This feature seems to only be full-blown in Brittania campaign. It's semi-present in Teutonic, but only for the elite (and I mean Elite) Teutonic units, which decimate everything but require 90% of province's adherence to Catholicism before being recruitable there.