Hey, I have some ideas...
1.) Every companion should have its own inventory.
2.) Upgrade inventory interface for causal dress for feasts.
3.) Special gifts for tournament winner + more popularity for him/her in town.
4.) Ability to enter into the Church structures + more politics.
5.) Fashionable armours for female characters.
6.) Markets and feast in villages.
7.) Great castles for high nobility and small castes for minor nobility.
8.) Alcoholic animation for drunk in tavern and fight without weapons.
9.) Better armorer and weaponsmith shops.
10.) Shop only for causal dress, wardrobe and religious habits.
11.) Ability to price persuasion in shop. (synergy trade + persuasion)
12.) Abandoned small castles for repair.
13.) Better land textures (fiedls, orchards) and roads.
14.) Better texture and shape model for masterwork/lordly item and worse texture and shape model for cracked/tattered item.
15.) Battle maps á la A Clash of Kings mod.
This is all. Today.