Considering what we know of the daemon factions so far, and their strengths and weaknesses, I cannot help but think the Wood Elves are gonna have a field day against all of them.
Khorne- has hardly any range, has slow infantry (except bloodletters who hit hard but are a bit squishy), and slow monstrous cav. Given their prowess in melee, kiting Khorne seems to be the way to go, and none kite better then the wood elves.
Tzeentch- have powerful magic and great firepower, but it is short ranged. This means Wood Elves will likely be able to outshoot them. Admittedly, I would have thought Doom Knights could cause them some issues, but will that be enough?
Nurgle- Slow as hell unts. Kiting them will not only be effective, it would be EASY. They don't even have shields on any of their infantry.
Slaanesh- Super fast, so kiting them will be trickier. Yet, they have no flyers apart from furies, and no range. Hawk Rider spam with sisters of twilight will likely anihalate them. Plus, their infantry is super squishy and will likely fall apart to range firepower.
Wood Elves are already meta in multiplayer, and the addition of these 4 daemon factions may not do much to change that. Do you guys agree or disagree?