There is something off about the population happiness cheat as well. I think it forces you to be respected personally, however, you're still hated on the faction level and the people aren't necessarily happy, causing you to still face uprisings and such. A way to not upset people by arresting them would be cool, or forcing the factions to like you.
The low corruption cheat may or may not be working, I'm not sure exactly sure how low is low corruption, was as high as 25% last i checked which seems pretty high corruption for it to be called low.
Otherwise seems like a good trainer except for some possible additions if they can be added.
Requested additions/ possible suggestions:
The constitution changing ability I mentioned last time.
What I have suggested above about forcing people to like you/ also adding foreign powers in that.
Some sort of invulnerability for your soldiers, or at least the palace guards if no on else.
A way to increase spy success/ force it to be 100% successful.
A way to speed up trade ships (i.e instead of 5 months or 7 between shipments, make it 1 or 2, less at any rate).