I think he was referring to the fact that the words world and word are similar and that is where his confusion stems from.

Dude, I meant the words "Word" and "World". Just one letter apart.

Emperors Children or Death Guard, would be very interesting ^^

Emeperors Children sonic weaponry would be a great advantage in mid and long range combat. We could probably also expect some kind of 'scream' powers that might have an area effect.

Thousand Sons and World Eaters definitely feel the most important in the story, as they were the most focused on in HH and in separate books, although Death Guard is another big one. However, I feel like all of them should be included at some point or other, as everyone will have their own preference and it should be good to respect that. Personally though, I'm more of an Emperor's Children/Thousand Sons person myself.

Oh nevermind then...

I'm a fan of the Thousand Sons, though I wouldn't mind if the 5th was the Alpha Legion or the Death Guard.

So hard! Thousands Son, or Death Guard?! I love me some Nurgle worshiping, but i do like some Magnus the Red! AHHHHHHHHH!!!!

Nurgle loves you more, i think the choice is obvious.

Papa Nurgle loves all his children.