Remember the tarkin doctrine? So try to build a weapon able to make your empire feared from the entire universe !!!
Then we make the versus series !

My first try :
"I have an Idea mixing the galaxy gun with the sub spatial ship from super smash bross brawl.
img3.wikia.nocookie.net/__cb20…
www.youtube.com/watch?feature=…
You replace the big canon by some modified w-165 gun . You have the base of a W-165 canon hidden under the turret you put 5 gun hidden behind an heavy armor plate with a lot of cool down systems to avoid over heatings. The 5 gun fire one by one to avoide over heating an benefit from a permanant fire....
The ship will be eqquiped with some heavy cortosis missile luncher intead of the green things.
A lot of defence point system mass driver flak turrets driller missiles lunchers rails guns....a city a factory, a disruptor field generator likje the star forge..
It will have a moon size !
The main canon and missile luncher will serve to fire the galaxy gun shell. Because this ship will have a galaxy gun inside !
It will fire even bigger missile with more fire power in the defense gun, have the same mean than a torpedo sphere to penetrate planetary shield. and will be eqquipped with
a bigger shield....

The ship will be also eqquipped with the super weapon of the subjucator class..... to protect the flan the weapon is made to lead deep campaign into other histiles galaxy, it's a mother ship and a weapon of mass destruction able to snipe and destroy planets...."