Slitherine

As a stable nation you don't get a penalty from status age as a republic. But as soon as you switch to glorious you do. And that can be quite a lot if you have been stable for a long time even counting in the 35% reduction.

I think that is a bit harsh and not really justified. Why should I be punished for being stable for a long time? Why does this make my people more decadent?
IMHO the switch should be a bit more gently. As is you may be shot out the green zone directly into red depending on circumstances.

Yes that's true, it could be more gentle, but it introduces tweaks in the code and subtleties for people to understand, plus you have to explain in the UI that there will be a penalty kicking progressively. In the end, we have been very prudent to not add too many extra game rules.

Ok, understood.
IMHO a simple ceiling to status age would remedy the problem without much need of explanation. I guess not many people would even notice.

If I may add: it would be nice to have an in-game method to get rid of status age. Make it difficult and/or costly but there should be a method apart from deliberatly killing culture.
Killing culture to deliberately get a downshift to remove age to rise up again seems a bit silly and counter-intuitive.

there are 3 in game options ;

a) every time you change age title (mature-glorious-old etc but not a golden age) you shed 50%
b) every time you take one of your objectives you shed 20% (think that is the correct value)
c) if you get the reform citizenship option, pick the third (ie not give citizenship to other ethnic groups), that sheds 33% (I may have the values for b+c mixed up).

Clearly once you are a glorious Empire (a) dries up but I have deliberately in mid-game engineered glorious-old-mature-glorious and that got govt age nicely under control for the end game.