Yes, I am not happy Vlandia bouns, it's just mercenaries forced, petty much useless for those who want vlandia but not play as mercenaries, I rather to had cheaper wage of knight and crossbow stacked with skill for Vlandia over exp and mercenaries, +10% exp is limited, not longer term, so I think every culture should had little bit cheaper wage for same culture of troop for cheaper wage, but other culture stay cost but not get cheaper wage somethin like that, I think it's make sense and logic, same culture as player's background culture get cheaper wage for troop and map speeds much better than difference culture's troop, I don't think it's need penalty for try to get difference culture troop, but same culture get cheaper wage along stack with skill and perk.
I mean it's might every culture got cheaper wage of same culture troop, little bored same bouns for all culture but useful and same time, it's balance for all culture easy, rather than one culture had better than other, so go on.