Will there be Slavic tribes in the game so that it would be possible to create a scenario of the fall of the Frankish Empire?

[Rodak Polak 597]

In 843, the Slavs already inhabited the areas they inhabit today, but they were just starting to create centralized states. It would be good if the game had Slavic tribes, so that it would be possible to create scenarios before the formation of Slavic countries

For example, the Polanie, the Eastern Polanie, the Lendians, the Siewierzans, the Volhynians.

@Łukasz Jakowski I beg you