Allrighty, so I made myself a max-skill character to give the new weapons a nice play.
Banish is good fun. I think the aiming time needs to go down a bit so the AI can appear borderline-competent with it.
Artassault is extremely situational - the only place I've actually found a use for it is an early-game flagship Vapor - but for that its pretty effective.
Mostro is great fun on a flagship with flicker tricks, though AI does much better with a Hephaestus - cheaper and the range lets a steady officer actually use it, only an aggressive one will actually make good use of a Mostro. I like to stay in faction flavor so my AI ships get Uhlans or Hexafires, or the Mostro never gets used - aggressive-officer DA ships are also known as fireworks.
Really feeling the need for a heavy IBIS or a light Burchel in the 6-7 OP cost area, as the Burchel is really too expensive for anything except capitals, but its current power is necessary for PD there.
I'd also love a large-mount kinetic as a vanilla Mk. IX is superior to any DA weapon on the Derecho.
There's also some issues on the destroyers right now - on the whole they cost too much to deploy, as none of them are as strong as their vanilla counterparts, and the Fractus even costs more than a Condor. Likewise the Stratus is not nearly as a good as a Mule - in combat its a liability by comparison - and a Calm is not in any way a match for a Hammerhead despite also costing 8 to deploy.
P.S. Yes I'm aware DA ships should come with a fighter screen, but a Calm with a Warlust wing is still worse than a Hammerhead with an equivalent fighter screen.