How about new weapons crafted all/all h2h or 1hb tradeable leveled up via essence and have dmg + procs to keep up with warrior dps of that tier essence? Hope makes sense, I'm still typing on iPhone, not home yet.
I liked your original Idea of craftable augs through the traders guild. I think the new Augs shouldfit whichever slot is currently utilized by that sucky lifetap aug. The augs should be just like the armor in that it requires your creating the first level and working your way up to Aug V. However, it shouldnt cost millions of plat.
I dont like craftable weapons with procs. I would hope all the time i spend getting my epics would be rewarded by actually using them. DD augs for melee should be enough to bring their Dmg up to par.
I also think that casters need a little love. Nukers should get an Aug with % increase to Spell Damage. Healers should get an Aug with % increase to heals. Nothing huge but a little extra push to help out.