Game Mechanics: Illusions no longer affect faction?

[Sundawg]

to the OP:

The lich line of necro spells all seem to be working fine for me as far as forcing a faction adjustment with certain NPCs.

I suspect your problem might be a case of skeleton not moving your faction enough to show a different /con level with the NPC(s) you are considering.

If you truly go to a wide variety of NPCs in different locations and continue to see no difference in faction when in or out of skeleton form, then you can PM me your necro's name and i'll look for you in game and we can do a quick test together.