Although this is a bit of a niche suggestion, I think SD having proper Class-D Transport Vehicles when escorting CDs to a test or similar would be good for immersion. Sticking Class-Ds in the passenger seat of a humvee or in the unsecured back of an M1075 would pose several obvious security risks IRL. After all, there’s a reason Inmates get designated transport vehicles instead of just being thrown into police cars when they’re being transported.
(Also here’s a lil mockup I threw together in photoshop so everyone knows what I’m picturing.)
Feedback on this would be appreciated.