Might GM a horus heresy-based game soon and I'm wondering, what are some examples of non-military tech that was relatively common during the great crusade that was lost by the time of 40k? I know solar auxilia vets had access to anti-aging technology as a reward for their service and that stuff is mostly for high ranked officials and nobles by 40k so I guess that got less common. I'd ask in the RPG thread but that place is pretty much dead these days.