It's pretty uncontested that the Battanian culture bonus is considered the best in the game (unless you're playing as a pure trader, and even then it's debatable), I (and presumably many other people) also think some of the culture bonuses are rather underwhelming. I really doubt that TW would change these bonuses (again), especially after the release, but how would you change them?
I would:
- Replace the 20% cohesion loss reduction with decreasing snow movement penalty for the Sturgians by 30-50%
- Nerf the Battanian forest movement penalty reduction from 50% to 25%
- Replace the Aserai caravan cost reduction (since only the player benefits from this iirc) with a -25% cost of recruiting, upgrading & daily wages for mercenary units
- Replace the Khuzait bonus to animal production in villages with a decrease to "wrong culture penalty" from -3 to -2 (I chose this to reflect the rather laissez-faire approach of historical nomadic empires over their dominion, but it might be a tad too good?)
- Change Vlandia's +15% income for mercenaries (since the lords don't actually benefit from it) to +15% experience gain to Noble units. Also possibly change Vlandia's malus to -5-10% experience gain to normal troops (although this is more for flavour but may make Vlandian lords too weak so it's not really necessary)
- Change the Empire's bonus to influence while in an Army with a -20% cohesion loss bonus (the same one Sturgia currently has)
I would:
- Replace the 20% cohesion loss reduction with decreasing snow movement penalty for the Sturgians by 30-50%
- Nerf the Battanian forest movement penalty reduction from 50% to 25%
- Replace the Aserai caravan cost reduction (since only the player benefits from this iirc) with a -25% cost of recruiting, upgrading & daily wages for mercenary units
- Replace the Khuzait bonus to animal production in villages with a decrease to "wrong culture penalty" from -3 to -2 (I chose this to reflect the rather laissez-faire approach of historical nomadic empires over their dominion, but it might be a tad too good?)
- Change Vlandia's +15% income for mercenaries (since the lords don't actually benefit from it) to +15% experience gain to Noble units. Also possibly change Vlandia's malus to -5-10% experience gain to normal troops (although this is more for flavour but may make Vlandian lords too weak so it's not really necessary)
- Change the Empire's bonus to influence while in an Army with a -20% cohesion loss bonus (the same one Sturgia currently has)