This is a good point and something I've run into myself as well - I will bring it up in the community suggestions meeting.
Nice; thanks! Would go a long way to making the game less frustrating.
Doubt they will introduce the feasts.
Like, what do you have in mind?
After an X cooldown period have a possibility to throw a party costing Y money in your castle and invite all friendly lords?
They can only be held during peacetime, and both player and AI can hold them, like in Warband.
The benefits would be making it easy to find a lot of lords and ladies in one place for quests/marriage proposals, giving the player a way of gaining relations and influence in a non combat way during peace, giving the player another activity to break up gameplay, increasing immersion in the world, and providing another roleplaying tool.
So, what do they do? Stand around the main hall and you do dialogue with each one for additional charm points and relationship gain?
Sounds great! Except, instead of just standing around, lords and ladies could re-use the existing dancing/listening to music/chatting animations from taverns. Add to that a single-stage conversation you could have with each noble guest at the feast, using the existing persuasion system to gain a small amount of relations with the clan of that guest, and feasts would be an immersive experience.
You do know that it will become boring and stale
You could say that for many of the features currently in Bannerlord, but here's some important counterarguments to that.
1: Feasts have benefits to other areas of gameplay other than just the experience of the feast itself, as said above.
2: It's another diversion, something to break up the constant loop of menus, travel, and battles. Sprinkled inbetween other aspects of gameplay it won't be stale, Warband feasts were not unfun for the player to visit.
3: Once the framework is there, more variety can be added with mods.