Took most of your advice, for some reason I stuck the acid maw on the Hive tyrant though, also traded a twin link dev for lash whips, dropped 3 guants to get scream. Keeping the zoanthrops by the shooty warriors for synapse. Dropped a unit of stealers to give the rest 4+ save.
The list did ok, with the lictor getting very lucky, taking down a chappy.
I continue to be underwelmed by both the tw devourers and the venom cannon. I'm shying away from 4+ saves. Cover saves are easy to come by, and I fail them anyways. My Nids love dawn of war deployment.