Playing the Ostheer now I have noticed 2 big problems with their faction that such an officer could alleviate. 1: Ostheer troops have no way to get themselves out of suppression besides killing the suppressing unit. 2: Although the Ostheer have many ways to heal and reinforce outside of their HQ, none of them can be retreated to. This officer could be retreated to similar to the Brit Captain so as to regroup, reinforce from a nearby halftrack or field hospital and get out of suppression without being punished to retreat all the way back to HQ. The officer would also be able to use some ability that breaks suppression for a short time and might even make infantry move faster(similar to a command squad not that i think of it except being a single person and not being responsible for vet). The addition of a unit like this would certainly fix both of these issues.
(as a side note, I am against the Ostheer hospital truck only being deployable in the HQ area. there is no point of it being a vehicle so if you are set on not making it a copy of the Soviet medic truck I dont see the point in making it a halftrack and not a building)