There are probably some, but there seems to be an atmosphere and mentality that legions like the Dusk Raiders and the War Hounds are viewed as "too imperial" or "old fashioned" by their Death Guard and World Eater counterparts. I know World Eaters feel this way since they have the Butcher's Nails pounding in their skulls, while War Hounds like Lhorke the Dreadnought dont, and were viewed as outsiders as a result. Dusk Raiders are a very interesting legion in my opinion though, i personally think Black Library should do some lore on the Legions before they found their respective primarchs
I want Plague Zombies. Having the enemy forced to kill their own as well as the loyal servants of Father Nurgle. It's a delightful thing to do in DoWII. Should be equally delightful in EC.
how is that going to work? If that was the case then everyone would be infected and that won't do, that's way to OP for one chapter to have.
Now if you are talking about those football sized guys, that's fine. As long as the can be kicked like footballs as well.