I don't know much about balance, but it seems some cruisers and capitals are one on one better than many other low-tech/med-tech DP equivalents. This is just me messing around in simulations using AI vs AI, no officers using preset loadouts. Some of the ships systems, especially the the unlimited range EMP that targets everything?, seem kinda too good for what its mounted on. Maybe its cause of the faction weapons? Some of the DPS numbers are quite high.
Overall, I love the theme and style of the Bultach weapons/ships. Even the rebranded lore seems pretty nice to me, although its a shame GW is the way they are. Whenever I run sims now, I make sure I always test against some Bultach ships for the fun of it and cause its a really strong faction.