Almost forgot. One IG/MMT project that I did a lot of work for, but which was never published, was an update to the star system generation rules, first seen in Scouts then updated in Grand Survey and the World Builders Handbook. I was tasked with doing a complete review and update of the system. I remember a lot of e-mails back and forth with major Traveller players at the time and a few significant disagreements over some sections. I also made some contacts into the Astronomical community to get the most up to date information. I remember one of the big debates was about Type II population stars and the extent to which they were evenly distributed or whether they made up a halo like sphere around the galaxy and therefore would only be seen in the plane of the galaxy where it intersected the halo. Again I'l see if I can dig out my notes.