OpenRA

Would there be a way to separate the main production queue from the defense queue with regards to the baseprovider trait?

More specifically, is there a way to allow the production tab to place normal buildings unhindered, but to put a 15s initial build delay on only the defensive structures?

No, it is all or nothing at the moment. No separate base providers per build queue or other filters are possible. See https://github.com/OpenRA/OpenRA/wiki/T ... seprovider