Could you consider adding a way to reverse Mazarat's spy transformation in the future?
It kinda breaks the suspension of disbelief that the PC can know something is wrong with their childhood friend, have the influence to fix it, and also have Mattias under their thumb... and still not be able to do anything about this.
Also could you add the ability to make the Oleogarchs poly? Similar to above it's kinda an obvious move from the protag's perspective.