A very good point is raised by contemplating about differences between Warcraft III, and WOW lore! Indeed it would be a grievous mistake to alter Warcraft III lore in favour of WOW lore.
I can’t emphasis enough, that Warcraft III should be the leading cannon lore for the continuation of the RTS part of the franchise!
Of course WOW would deviate from the brilliant telling’s of War III, you are after all a mere warrior amongst heroes in a larger universe. Alterations in the WOW telling’s were necessary and thus understandable for the emersion of the players. Whoever they do ‘break’ from predating Warcraft III lore, or change the nature and background from characters. They start to act differently than they would have in Warcraft III. The same goes for the overarching story line and happenings in the Universe.
As such: Please keep Warcraft III cannon, and review all future happenings for Reforged, only from the light of the original story!