Have you thought about further down the line working more on the enchantment system? I've been thinking along the lines of being able to collect different enchantments from the magic items you salvage and being able to pick them somehow when crafting. Something to give a little more control in the kind of gear being consistently worn would be a welcome benefit, though would probably have minimal results with some of the early game issues people are having.
In regards to necromancer stuff, maybe would be neat to eventually get a single champion type zombie that sticks around a little longer. Perhaps an abomination golem type creature that requires multiple corpses, thread and extra time to conjure up and as a benefit comes with an ability or two it can use. I love me a zombie horde as much as the next person but might need something also to properly deal with some of the tougher individual named enemies
Big fan personally of all things Warhammer so I'm a happy camper seeing even vague inspirations in regards to style setting or mechanics :D