Ah, I see. So it may be that while all the Warband staples are present, the way in which Bannerlord improves them aren't ready yet.
How did you conclude that?
You have improved economy, improved sieges, improved combat AI, improved settlements management, improved army management, improved kingdom management, hugely improved sieges, clan system, children, permadeath, executions, improved recruitment system, board games, minor factions, improved productive enterprises, more troop types, bigger map, more factions, more fiefs, becoming a king of an existing faction, persuasion system, sergeant system, barter system, settlement issues, crimes, camels and other animals.