Hey,
Given that you are playing an AdMech fleet an Emperor + Dictator might be a tad to much on the carrier side. All capital ships get +1 turret because they are AdMech, with the Emperor you have enough AC to be defensive + offensive.
Furthermore: 1 nova cannon is enough, torpedoes are a better weapon in the end anyway. But 1 NC to add to the mix for fun is always good. Torpedoes also have the benefit to work better in synergy with the attack craft.
So with that I would change the Dictator to a Lunar, drop a Nova Cannon, take a normal Magos (the cheaper one) because the Emperor offers +1 Leadership.
![Smiley :)](http://www.specialist-arms.com/forum/Smileys/default/smiley.gif)
With the remaining points either 2 escorts if it fits or re-rolls. Re-Rolls are always good.
![Smiley :)](http://www.specialist-arms.com/forum/Smileys/default/smiley.gif)