Clanny,
The snippet I was thinking of that mentioned the shades bound by the necromancer occurred in the Ships/Warhost arc. So the subsequent arc I was thinking of was the Alliance of Light, which saw the emergence of the Grey Cult as major plot point.
So when I saw a line in Alliance of Light arc, regarding a harmonic that can give demons physical form, I was wondering if we would then see a demon in the following Sword of the Canon arc. But what with dragons, free wraiths, the threat of the mistwraith trying to escape, 2 more cults of necromancers, the ancient struggle between biedar and korianni, the religion of the light, there is a already more than enough to fill out the final three books, without adding demons into the mix.
Yes someone did mention Grimward. But I doubt you could swallow up too many wraiths ex-marak.
But I too welcome sleo to the discussion. Glad to see another Janny fan out there.