Right, so a staff officers has pretty much a jack of all trades skill set, construction of 2, medical of 2, and a leadership of 3. Deploying a good SO can be very helpful specifically if they know what to do as such ground-side.
However my problem with deployed staff officers is they don't take or grab any equipment which would make them super useful like a defib and m276 rig, or tactical binocs or even gloves and a helmet.