OK, I got my first taste to playing the Rebels against the Loyalist on Cruel Aggressor tonight and it was very disapointing.
The Novalith needs to be toned down, the AI just kept building these and spam firing them. It was rather rediculous actually. There's no hope of winning a game if you can not defend against the Novalith Cannon. I would suggest that the Shielding you can research and put around a planet have the ability to also block shots from the cannon to protect your planets.
Otherwise, when this game goes live I will again reduce the Novalith Cannon to an interplanetary defense Ion Cannon as Ive done in my past mods.
Or at least set a limitation on how many of these cannons can be built.