>>5412715>Battleship, like you fellows want, then they are just Cruisers with a different nameThis might actually it. The in-setting name and class of a vessel doesn't always translate into its practical use. Take Star Wars, the Venator is supposedly a "Cruiser", and the Providence Class a "Destroyer" but in that setting they were very much used and operated as battleships.
The Great Crusade is supposed to be an era that makes modern 40k seem like a shadow of its former self, so (maybe not now but later at the height of the crusade) so in setting battleship classes being used as what you would deem cruisers is actually very likely.
The easiest thing to do is maybe just say "Capital Ship" instead of cruiser as that seems to be what we're speaking of here and leaves more to the imagination. Both battleships and cruisers are capital ships.
