I did a little quick testing and found that the torpedo/missile cruiser proposed by @Larknok1 absolutely wrecked battleship fleets of equal power with tachyon lances, 2 KA, and 2 Plasma (which I found to be the strongest build in BB vs. BB battles of equal numbers) when I paired them off against each other using fleets of equal power. Despite taking heavy losses while closing the gap, these ships absolutely devastated the BB's at close range. I then paired off the cruiser proposed by @klingonadmiral against an equal-sized fleet of the torpedo/missile cruiser, and found that the torpedo/missile build was beaten handily. I even tried mixing in quite a few x6 whirlwind cruisers and point defense/fighter cruisers, but still could not get the missile build to defeat that of @klingonadmiral. HOWEVER, the latter build was absolutely annihilated by a BB fleet of equal power using the design already mentioned. Although it will need more testing, there appears to be some interesting mixing/matching possible here.