Sorry but from a nasty CTD experience with the internal build (one or two version before 1.0) I learned that script, traits, building code and all other stuff which isn't really used until campaign time is loaded into cache anyway.

Or at least, if there is an error within the script your mod will still CTD before even reaching the main menu. Same for the traits & ancilliaries files. Same for the recruitment code. (Which incidentally is not just big, but insanely vast and hughe.)