I personally want commandos to become a more skill-based unit. THey should require tactics to use effectively. This is why I would like to see:
-Commandos get soviet sniper cloak. Only active when in cover, and dissipates the moment they leave cover.
-Ability to create yellow cover (foliage, small ditches), to help them set up ambushes.
-Less recieved accuracy to punish them for charging enemies head-on.
-Commando Gammons mirrored to bundle-grenades.
-Ambush ability no longer gives access to damage modifiers.
This way, commandos will have clear counterplay (scout units) since they have to stay stationary to ambush enemies. It will also make them less able to singlehandedly walk up to enemy positions and murder them to death. At the same time, it retains their uniqueness and keeps them as very effective flank engagement and flanking units.
Trash idea. Whole point commandos are fun is that you can move into enemy territory undetected. Remove that and kill commandos.