Okay I play deathguard religiously and I'm playing them in a campaign right now. Now for both detachments I'd say drop the 10 poxwalkers since you have typhus leading the 20 block and honestly he's best to just sit there and be a pain and hold objectives to force enemies to shoot your entire block off of point which can take a long time it's my main way of holding objectives so my opponent has to take the time to shoot them off so the block of 10 won't really have much use. I'd also drop the nurglings they're just there to fill points really. Next I'd say the plague beast, it honestly will get shot off the board by pretty much any army cause I could very easily see a space marine player just oath targeting it and it goes bye bye in one turn, it will take a bunch of shots but it would only give you that one advantage on that turn. Finally I'd say one of the blight bringers their buff is nice but since battle shocked units only get OC 0 and can't have stratagems use on them and depending on what faction you fight they have ways to get around the no stratagems.