There are too many ducats and points at late game already, and new DLC will give late game ducat booster called coal. We need some changes to economy.
For example:
Increase advisor cost increase over time from 0.5% to 1%.
Nerf discount of estates advisor from -50% to -25%.
Increase land maintenance increase from technology level from 1% to 2%.
Add base yearly inflaction increase modifer, like +0.2% per year.
Buff bonuses from professionalism and make professionalism also increase land maintenance.
Increase institution embrace cost.
For example:
Increase advisor cost increase over time from 0.5% to 1%.
Nerf discount of estates advisor from -50% to -25%.
Increase land maintenance increase from technology level from 1% to 2%.
Add base yearly inflaction increase modifer, like +0.2% per year.
Buff bonuses from professionalism and make professionalism also increase land maintenance.
Increase institution embrace cost.