Originally Posted by
Sargnagel
Illidan ist FULL of Fel Energy. The Opposite to holy energy! We have nothing in warcraft, that I am aware of, that can combine these two powers.
(Priest use light and void, not fel!)
So if the light would not tear him apart and rob him of ALL his demon powers, they are inconsistent with they own lore, again!
Illidan is a demon hunter, who absorbs the power of demons to defeat them. Let him absorb Gul'dan ffs, Illidan would be more powerful then ever, ready to attack Argus! There perfect consistent story, that achievs the same narrative has the "champion of light" bullshit they came up with.