Thanks for the suggestion! While doing our prep research we discovered he actually has left GW, and gone freelance as a write, game designer, and world creation consultant for a few tabletops and video games (Though he still does work for GW upon request). His last editions as a full fledged GW employee seems to have been Fantasy's 7th Edition, and 40K's 5th Edition.
The Three Major games he worked on outside of GW was "Cutlass!", "Open Combat", and "Voodooworx"