I know it is a separate mod now, but I was wondering if it would become a modification in the future, as one of the pistol mod slots hint that

Could be, but I just figured that the "smart gubbinz" reference in that pistol mod slot was just for miscellaneous effects that aren't necessarily for ammo (same slot after all). I'd love to have a smart pistol mod though.

Well the only "smart gubbinz" I've found gave the dakka slugga auto-aim and lower damage, turning it into a "smart" version of the weapon. I didn't find one for the other sluggas though.

And about that napalm deffgun... it sounds fun, but really, this sort of thing should be an ammo mod, not an entirely different weapon...

Wait, you have? I've found no such mod at all, and it's not in the list in the OP for 30k boxes (the only ones I have left).

It looks like they may have added more items, as I just got an Electro Clubba from a 30k box.

Gud list here ! Thanks ya for da work ya grotz ! I was luking for dat lifesteal mod for my Brigthy Axe.

Glad to see Orkz have the worst Uniques ;(

The Eldar would like to have a talk with you as we have a whole amount of one useful "unique" weapon, which is the Hunter's Mark (roughly the same dps as the Hawk's Talon, but with a lower RoF). After the Lashsword was fixed it haven't really been worth it, as it is better to get lifesteal than poison.
None of the other weapons are useful in anyway and at least one of them is an outright attempt to make us annoyed (Avenger's Duty).

Ace dakka makes up for most of them tbh.

Did they change the model yet, or does it still look like a slightly recoloured dakka deffgun?