Ok I had a dissapoointing game tonight (our 2nd) Inspite o unlucky draws in critical battles, I still was in a position to close in on the emporer and have a chance of killing him.
Then the shy Fortress comes up, Empore runs to some out of the war corner of the board with a large enterage, and in doing so joins up with the fabricator general, so he can be fortified with 6 guys.
This is all fine, all but the sky fortress basicly being a get out of jail free card for the emporor.
40K theme wise, the Empore shoudl not be able to leave the palace cause he is holding back some gate. He can only leave in order to do a quick run on the emporer.
I can;t see chaod EVER killing the emperor if the sky fortress rises comes up.