The overall problem for the CO right now is that he's rarely respected. I had a great game as CO last week where I did some casual commanding where most of the squads listened to my ideas.
If you want to be a successful commander in a public game you pretty much HAVE to do casual commanding because it is expected that you cannot get all squads to coordinate correctly.
So what I do in a casual game as CO:
Use UAV - I often dedicate the UAV support for tanks since they benefits most from the intel and they sincerely listen to you because they are always interested where their threats are located.
Use waypoints - What a commander also should do if he knows the map well is use waypoints. I personally don't use them as landing zones but instead I put them down where I think is a good location for setting up a FOB. This is surprisingly effective.
Transmit requests - The need for a CO for communications may be reduced significantly since Mumble but if there is a CO you would be surprised by how many squad leaders that will contact you to ask another squad for help/support instead of contacting them self.
This is where you can get in character and do some commanding and do some squad management. Be diplomatic about it and just remember that you can't expect full cooperation.
Place markers for transport choppers - The transport choppers often end up in a situation where they have to do several landings in one trip. There may be two small squads who need to be put down in different locations plus a supply drop in a third location. Putting down markers for the chopper pilot as he goes through the route can help him alot.
Place observation markers for relevant squads - Squadleaders in the field sometimes lack the time to get a good overview of the battlefield. Sometimes he can miss a vital information. To make up for this simply place observation markers for the squadleader. It will not spam his radio but he will get an instant location of possible thread and only needs to accept the order to get a marker down.
Place map icons from relevant intel - Needless to say the markers on the map can be a big help for your team in the battlefield. Keep an eye on the chat (many lonewolfers will often bring important intel in on the chat) and place those icons. Do not mark moving targets instead use observation markers for the relevant squad. Highest priorities for me to mark is AA, FOBs and stationary tanks.
Could be cool if we could get a "Casual CO Guide" going
