As you may know there has been growing support for a ship that mounts a laser as its main gun.
I would suggest this http://halo.wikia.co...stealth_cruiser
Because for all we know ONI ships may be the only ones with some form of laser.
In terms of looks it should be a refit destroyer, with loads of antennae on it somewhere, The destroyer is a prime candidate because it is the same length, and it need to look really menacing, and if you are going to mount an up scaled spartan laser, you have the room from where the 2 MACs used to be.
pretty please devs?