You can mod the EDB. Just add law or happiness bonus to walls, government palaces and academies. Here is the code for academies:
Code:
building academic
{
levels academy scriptorium ludus_magnus
{
academy requires factions { carthaginian, eastern, parthia, egyptian, greek, roman, } and building_present_min_level market market
{
capability
{
happiness_bonus bonus 2
}
construction 3
cost 1600
settlement_min city
upgrades
{
scriptorium
}
}
scriptorium requires factions { carthaginian, eastern, parthia, egyptian, greek, roman, } and building_present_min_level market forum
{
capability
{
happiness_bonus bonus 4
}
construction 5
cost 3200
settlement_min large_city
upgrades
{
ludus_magnus
}
}
ludus_magnus requires factions { carthaginian, eastern, parthia, egyptian, greek, roman, } and building_present_min_level market great_forum
{
capability
{
happiness_bonus bonus 6
}
construction 6
cost 6400
settlement_min huge_city
upgrades
{
}
}
}
plugins
{
}
}
Remember that each point of happiness or law is equal to 5%