Can we replace fallen/conquered Praetors?

So I'm wondering, since we can alter some configurations of a running savegame and it even has a tab for the Praetors: can we recruit/invite new Praetors once there is "a free slot" for them?

the Anno 2170 ARRC mod had a similar mechanic, just with a simple ship builder and it was great for having smaller AIs at the start and harder ones in late game