BUT!
If you're a fan of the overall necromancy theme, you have the option of (Unholy) DK since they offer necromancy as a whole spec.
If you're a fan of the overall elven ranger theme (which is included in Dark Ranger, but also with added necromancy) a (elf) MM Hunter is also pretty close to that, they even had Black Arrow before!
Engineering is a PROFESSION, the only class that offensively uses bombs as a class spell is Survival Hunter.
Why can Survival use bombs as a spell but its so wide and far-fetched that Tinkers can?
We have no Class or even Spec that utilizes Technology as a weapon. Why dont you understand that?