I think that Blackened Dragonspine Rapier from Versikol should be looked at. While the mod on the weapon is very nice, it is hardly much better than the Crystallized Djinni Voice from PoA, and completely useless once you obtain Puppet. The fact that it has no proc makes it worse dps than other weapons from much easier mobs (Seraphic, Stormrazor, Splitblade, etc.) Also the fact that it is primary only further reduces its use since, iirc, mainhand procs have a higher chance of going off. I think that the rapier should be made primary/secondary, the stats downed a little, and a decent dd proc added to it, and possibly have the mod reduced if need be to balance it.