There is a crewrrank (not sure of the exact heading at the moment) section that started with 12 mat/crop elements which I changed to 15. I then added 3 images (Lt. Cmdr, Cmdr, and Capt.) to the right of the original rank images on the bottom of the crewsystemsmanagement.dds at the same spacing intervals and then added their values horizonatally to the added crop numbers. In-game the new sleeve images show on both the "unused" or "availible" crew side of the crew management page as well as when they are moved to your sub. Also, if i change the current experience of say a Lt. Cmdr to 25,000, and then promote him to Cmdr on the boat, the sleeve image will change upon promotion (I've set the promotion values for ranks over Lt. to "base"). I did, however, manage to crash the game last night with repeated promotions

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I have also found 4 instances for "samplecrew" in the menu file that I believe tie to the four rows of crew images (4 images per row) that have 4 mat/crops each. So, like you said the images are there and tie to specic calls...but changing those calls is the issue. Unless I've completely missed the boat

At the very least I have contacted lurker via PM as per your advice and he was kind enough to respond and say that he would look into it. I'll keep this post updated if I find anything out.