*Obligatory "but we already had this (kind of, sort of, maybe) in the original Thaumaturge!" comment*

Serious now:

I certainly enjoyed "Fistweaver", but it's hard to picture how exactly that style would apply towards the suggested Necromancer here...

To me, Necromancer feels like it ought to be a utility caster, whose resource for damage dealt just happens to be rather good for "death-eating" and "reanimating" (or, in practical terms -- healing). I just... cannot envision it as a full-fledged healer.
So I guess I'm stuck at the "Would love it... once hybrids can actually be a thing, content is decently varied, the game feels a bit more like an RPG, and job identity truly means something" stage again...