Ouch. That's a painful thing to do for the good of the Empire. I'm sure the vultures are starting to circle, after so many Romans have killed themselves in civil wars and uprisings in the last few years.
It's too bad that Kyrillos's intrigue is so low - the best way to regain the throne would be through a swift knife in Porphyrios's back, which would be cheap(ish), wouldn't cost the lives of thousands of invaluable troops, and wouldn't require you to make concessions to others in the Empire.
Oh well, perhaps you can marry off some old crone to Porphyrios, so that he can't get any heirs?
It's too bad that Kyrillos's intrigue is so low - the best way to regain the throne would be through a swift knife in Porphyrios's back, which would be cheap(ish), wouldn't cost the lives of thousands of invaluable troops, and wouldn't require you to make concessions to others in the Empire.
Oh well, perhaps you can marry off some old crone to Porphyrios, so that he can't get any heirs?