You are not the first to mention that necromancy is currently not, well, necromantic.
They recently also changed all the spells target physical armor, basically turning it into a melee class.
While the tree works well and all, it should probably be reworked a bit, or renamed.

What i would like to have seen is necromancy utilizing all those body parts that are scattered about everywhere.
Currently they are just elf snacks, which is great and all, but one would think any necromancer worthy of the name could find a use for all those spare parts.
Would not take all that much to make necromancy more necromantic.
Letting the player animate dead enemies, or craft an undead monstrosity (perhaps a permanent toggle for -2 ap), would go a long way.