Update: AutoCaspeNBI has been released, for more information see: https://macmule.com/autocaspernbi/
Over the past couple of months I've been working on an app that with streamline NetBoot creation for use with Casper Imaging (as well as creation of Read-Only DMGs to restore to USB sticks.. if that's your thing).
The basic idea is that you start with an clean never booted OS.dmg either from AutoDMG https://github.com/MagerValp/AutoDMG, Casper Admin http://macmule.com/2014/03/06/how-to-create-an-never-booted-os-dmg-using-casper-admin/ or a Composer captured OS.dmg from a never booted Mac (as in with forked builds).
Then add a copy of Casper Imaging, from there you can click build or amend the options on the first window or click the options button for more.
All the options should have popovers that explain their functions in a bit more detail. Most of the options set will be written to a plist (~/Library/Preferences/com.macmule.AutoCasperNBI.plist) will allows for AutoCasperNBI to be re-run when needed with the settings you haves used before.
You should see some blanks in the GUI & parts i've not added yet (due to the fact that I'm not sure how yet). These should be added at some point.
Then there will be a full 1.0 release & include: