Can't help with the parts, I'm afraid, but with regards to the Corp in DZ, I did write up some House Rules for them a while ago.
http://www.dakkadakka.com/dakkaforum/posts/list/598976.page
I only ran a few tests, and you can see some suggested changes in that thread.
I believe you can get the game Sedition Wars very cheap in the US, there's a ton of Plague-suitable models in there.