Capturable Racial Techs

[Nitram Draw]

You could keep the racial tag on the items you don't want to have stolen/researched. I like the idea of components being able to be analyized, facilities maybe not. With a little editing you could tune it to the way you want with the racial tag. If you use the same prerequisite tech as the key to the entire tree and make it a racial tech the AI only has to research it once. You could then untag any tech you wanted. Your idea is good and can be made to work the way you want.