Mining laser could be theoretically useful if you have many small energy mounts with poor arcs but not enough OP to fulfil a full PD coverage. Perhaps on Shrike or Odyssey, though you can get full coverage with less weapon mounts. I place mining laser in the same category of proximity charge launcher/bomb bay. A weapon that exists so a fighter can use it. It also "characterful".
Devastator can be useful on the side of an Onslaught. I suppose it can have the role of thumper to make ships easier to beat, though you can do that by fixing in a medium weapon in the mount.
I can't see a good use for Ion Pulsar either. I suppose it is intended as an Safety Override energy weapon or for phase ships.
The more ships with more high ranged weapons you have, the less likely the enemy (or your AI) closes into short range anyway. It's not just fighters and missiles which can cause a warding off effect. I don't see why anybody would put an aggressive officer on a gauss cannon conquest anyways. Seems to defeat the point of the build, like putting an aggressive officer on a dedicated carrier.
I don't see why anyone would try to use the antimatter blaster as a general purpose weapon and compare it to such weapons. There are plenty of other energy weapons to fulfil that role. Not to mention antimatter blaster is limited by ammo so you can't use it as as general purpose weapon anyways. Surely as a weapon instead of proclaiming it overcosted, you could increase its cost to see where the tipping point where you would stop using it. lets see. For antimatter Afflictor, it'll have to be something ridiculously high like 20 OP. There aren't any alternatives for that afflictor playstyle of repeatable spike damage so that playstyle will simply disappear for the Afflictor. For Harbinger, as it has three other good alternatives in Heavy Blaster, Mining Blaster and Phase lance, it'll depend on preference, but lets say 12 OP. Underpriced the anitmatter blaster is not.
What's your problem? Why act so hostile and then repeat exactly what I wrote? The range of Hypervelocity Driver and Heavy Mauler make all other medium non-PD ballistic not favoured. That'll require a discussion on what the difference between broken and simply favoured is. Are they broken? Of course not, the other medium weapons are still useful, just that they aren't favoured in most configs since range 1000 is so much better. For instance is the railgun broken? No it isn't it is just undercosted.
I wasn't being hostile. And what did I repeat when you just said ''disadvantages''? That can mean literally anything. I'm just telling you they're fine, to say that any other non PD option is bad in most configs is a lie. I mean you might be using them everywhere but I know not everyone is like that.
I've got bad news for ya. Why pretend I wrote that they are broken when I did not? There is no need to pretend I wrote soemthing I did not, when it is just you.