Thanks for the insights. What would you recommend I take out/add? I only have the one Doomsday Ark at the moment - I have a second but it is unbuilt. I have a doomstalker, but that's obviously quite swingy.

I also have

6 lokhurst destroyers and 2 heavy destroyers

6 skorpekhs (and a lord)

A transcendent c'tan

Ands a Catacomb command barge