I just thought I'd put up some ideas I had for some of the less loved weapons of the game.

Catalyzers:
I rarely see this weapon used and it's such a shame that one of the few shadow handguns (am talking about the Biohazard line) just can't be used for practical reasons. Charged attack is hard to fully utilize unless solo and regular shots are very slow.

-Charged attack penetrates multiple targets and each one hit gets an "orb" ringing around it that damages other monsters on contact (much like having lots of small Dark Retributions; also means charged attack is useless on single enemies).
-Regular shot travels faster so that it's more likely (I think) to hit their target.

Callahan (and maybe Iron Slug?):
Most weapons have some sort of crowd control capabilities. Alchemer's ricocheting bullets, Pulsar's explosions, Brandish Bursts, DA projectiles; the Callahan fires one big bullet that is only intended for one target =/ and to add to that, you move very, very slowly whilst charging it.

-Charged attack penetrates multiple targets(?)

Backup Slots:
I used to use my Ascended Calibur all the time. But after I got an Avenger and a Faust, I never needed my Calibur. Any two damage type weapons is enough to deal at least neutral damage to any threat (in my case I'd use Avenger on fiends and Faust on beasts) and deal extra damage to most of them. There are times when I'd think about bringing my Ascended Calibur with me or my DVS or that normal damage slow sword whose name eludes me at the moment but then I'd think my =insert weapon here= would do a better job.

I would like the idea of having a backup weapon with me ready to use at any time (though I must admit the only time I'd see myself using it is when my weapon slots expire at the same time while doing a run).

-An extra weapon slot exclusive for one normal damage weapon. Kinda like how you are always given a pistol in a shooter game even though you never use it =D