After dozens of hours of playing i finally understood that "clan roles" are in fact "party roles"...
I was expecting far more from clan/vassality system, like you have to follow your liege into campaign if he ask you or special task he orders you. There is no real vassality system in Bannerlord everybody is vassal of the king when it would have been very fun trying to up your lord rank through vassality. Most of the time even if you were a great warrior the most important thing to up your rank in nobility was mariage or conquest or being the only heir of different powerfull families. Mariage in Bannerlord is a joke for now. Also the fact that you can play Bannerlord for several life times could let you try to use different mariages to up your rank in nobility: you start as a lower noble and your grandson is king.
Completely agree, for all I care they could've ripped off CK2 1:1 with that system...Such a missed opportunity!