Lets do a break downs
Char development: Warband: Concise, straightforward and dependable, BAnnerlord: Cluster**** of punishing opaque mechanics more suitable for a ****y MMO I don't wanna play,
Diplomacy: WB : Barebones but functional, Bannerlord: both too complex and too stupid at once for the player to comprehend. WAR WAR WAR,,,cuz WAR
Companions: WB Custom characters with relation circle kind of fun many easy to build custom, BL Randomized randos, dice roll on if there stats will let them level in a timely manner or not.... needs a lot of work IMO....
Fief vassal: WB: Be king's friend take fief get fief 90% of the time. BL: ???????? proximity helps and a buncha dum crap you can't control....
Fief King: WB you the last say always, have tax punishment to encourage sharing, BL: You get no say ever and also unlimited taxes..... bouquet... so there's no reason to share but the game makes you share...whatever
Getting Vassals: WB: Easy to get crappy vassals, long con to get loyal one's, BL: They want money money money and for you to be unrealistically large in power, so much so that you don't actually need vassals.
Vassal Control: King makes war and peace, limited control over vassal parties, BL: Vassals make war and peace ruler has no control over anything.....
Going Mad dog (early ruler) WB: are you a bad enough dude to fight everyone on the map (yes)? BL: If you don't press the make kingdom button nobody cares about you and you make war a peace at you leisure as long as you have the funds... I
actually like this as it adds to more gameplay option and a healthier long game, BL gets this one!
Raids: WB: Significant $$$ for time spent, BL: Just waste you time to lose relations, would get more $$$ fighting looters....
Prison Break: WB: Use own gear, fight outside scene, can tell prisoner to stay safe, BL: Use crappy civ gear, fight in tight corridors and can't control prisoner, get a permanent +1 wounded (-1 deployment) every time you fail, yes it's a bug but it's still in the game.
Tournament: WB Great money decent challenge, can control team, BL less money, less challenge but can't control team so......
Siege: WB: Sacrifice lots of infantry or just park Xbows in front of walls and laugh, BL Sacrifice lots of infantry or just park Xbows in front of walls and laugh
OR retreat party and murder the 500 worthless bots with your character! I kinda got give this one to BL, killing the entire town solo is hella fun! Gives me those goldeneye 64 feels sneaking around the walls sniping em down
Shops: WB dependable passive income forever , BL comparably much less income, much less stability and must be very picky about which ne to make, shops get lost do to wars and changing faction identity.
Marriage: WB: male: win tourney a couple times DONE, Female do you want ? and have ?? BL: BOTH Most annoying dialogue game ever I hate it so much, I've done it 50+ times by now, it needs to GTFO of the game!
Recruitment: WB Gain relation with village get more and better troops BL: Gain relation with 1 of 2-4 npcs for better and more troops
BL Only stuff
Caravan's: They get killed by looter all the ****ing time now...... also companions are better as emissary or governors IMO
Childs: WIP still? It's okay I like this feature, NPC skill training in general needs a lot of improvement though.
Pillaging: oh.. I can get a worthless amount of money and **** in my own face, OR lose 15 morale...... yeah
finally a quality feature!
Emissary: Yeah it works you can build up a lot of good relations over time passively, it's good
THIS ONE IS GOOD! Now, add it to villages too !
Board Games: It's cool, I think we could use a bit more +relation for doing it though as it is time consuming. I mean I'd rather they were Chess but still it's cool.
Governors: I like it, it's cool min/maxing for benefits, I do again think NPC skill gaining need some help though...actually lots of help
Rebellions:
Calradia house flipper here I come! I love it! The more the better! Delivering hoes to gang leaders and hoarding food all over the map I become the evil business man gobbling up cheap real-estate all over the map and not sharing!
Executions: I like having the option, of course it's bad for a long game and makes a short game very very short