I feel it is a fairly effective ship against everything not a starbase. (75 dps, 150 effective vs structures, vs ogrov's 45 effective dps vs structures, or 8.333 dps/supply vs 3.75 dps/supply), Unfortunatly, since everything not a starbase is fairly not effective, and hence, fairly not built, there is fairly little point to building them. THis is compounded by the construction frig's deconstruction ability which significantly reduced their use as a quick clean up tool.
The devs will never add an ability to the thing... so only thing possible is messing with numbers.
as far as cost, 2310 credits vs ogrovs 1520, or 128.33 credits/suppy vs 126.66 credits/supply, aka, their costs are effectively identical.
They are also more durable than orgovs, both in raw numbers/supply, and due to the way shield mitigation works.
They are also avalible at tier 3, compared to tier 4 for ogrovs.
Basicly, they are tied or better than ogrovs in every way except their focus fire potential, and range issues from not having an akkan/missile range upgrades.
Hence, I feel, that if I were to change something within the box, it would be reducing their target count and upping their damage to compensate. reducing the target count to 4, and setting the damage to 75, would give adjunctators a single target dps of 37.5. At max upgrades, this almost ties ogrov's single target max upgraded dps, (~56 vs 58.5) they would still be behind on a per supply basis, so thats ok.
Though, if i could change anything, it would be to only make their bank a 360 degree firing arc, but this is not possible.