Maybe also have convoys sometimes stop due to mechanical failure (or flat tyre) and spend time repairing it whilst the escort is assuming all round defense or just chills out... I have no doubt this is something tricky to code but hopefully something still doable for you guys!!

Has anybody in the dev team worked on a module that assigns random AI activities when the AI does not currently have orders assigned to it?
I am thinking opfor soldiers talking to each other, or one soldier breaking away for a pitstop, etc...