A "replace with conscripts" button of the Ship (F6) screen. A "replace with standard crew" would be nice too. Copying the state of the "conscripts only" button when a class is copied on the F5 screen would be nice too.
I just realize that, as I often do, I just put naval personnel on my terraformers and tugs by forgetting to click the "conscripts" box in the class design window. Oops
At present, there really isn't a good way to fix this in SM mode, unless I kill the ship and SM a copy (which is a bit drastic, plus I don't know how it interacts with my crew reserve pool). It would be so much easier if there were a tiny button I could push that would give all those navy guys to go back to the crew reserve and send the press gangs errrr I mean recruiters out into the streets to grab some civies.
Another thing that I often run into is having a bunch of ICBM missile bases with crews that are trained up to the 28% level, while my crew reserve pool is empty and I'm throwing barely-trained gutter-scrapings onto my new construction. My commander of personnel would REALLY like to get his hands on this source of trained personnel by rotating crew through the missile bases rather than leaving them there ad infinitum. If I had the "replace with conscripts" button I could get the crew out of the bases that way, but then the pendulum would swing too far in the opposite direction. A "replace with standard crew" would basically reap all those training points and put them into ships that are going out into the fleet (think of it as pulling out the most seasoned NCOs to ride herd on the conscripted masses who've had minimal training).
John