I was playing the Art of War and Thrawn died. The emperor turned up without the Sovereign. Do you only get it if you pay the 60k? However the Emperor and Carnor Jax hung around long after the era 3 and were still in Byss in era 5 although they were only a 1 population size unit.
In other news the EMpire can also field 4 SSD's, an Executor, Era 4 Daala in Knight Hammer, a Sovereign, and era 5 Pellaeon. Not sure if that is working as intended. Era 4 ended due to time and Daala stuck around.
For epic fights the GM can throw 10 Allegiances at you it a never ending wave of them