I really like this idea! This would make managing the navy a much easier endeavor!
Just as an aside, something to consider in the organization and flag bridge discussion. The current operational organization structure of the US Navy is something like this;
CNO (Chief of Naval Ops)
-CINCPAC (Commander, Pacific)
---7th Fleet (Fleet command)
-----Task Force (Battle, ASW, Logistics, MEU, SSBN, ect)
-------Task Group (Component of the Task Force, such as a Carrier Battle Group, Surface Action Group
Now, thats VERY abbreviated, and doesnt cover the horde of other organizational structures in the US Navy, but its a pretty good example. I think the WW 2 is even simpler.
A WW2 Task Force would consist of several combat divisions of similar class ships (destroyers, cruisers, ect) assigned to a Task Force. Example: Task Force 1, consists of a Cruiser Division of three cruisers, and three destroyer squadrons/divisions of four ships each.
Any component of the Task Force could be assigned to a Task Group, either as individual squadrons or as a group of two or more. The Task Force flag flew on whichever ship was hosting the TF commander. Task group commanders were often the captain of any one of the constituent ships in the group, and they were responsible for Task Group command as well as fighting their own ship. In most cases, these TG commanders were usually one of the squadron/division commanders. This was especially common in destroyer groups. Needless to say, most destroyers lacked flag bridges!
Flag Bridge facilities were common on large capital ships (example, the Royal Navy included flag bridge facilities on most battleships, and the US had them on all fleet carriers) but they were relatively rare on cruisers (more common on long range cruisers pre-ww2), and non-existent on smaller classes of ships. This was mostly due to size, since they were usually assigned to admirals which required large amounts of space for the commanders quarters plus room for all the admirals staff. I would suggest that Flag Bridge facilities would be a requirement for managing a Fleet or Task Force organization, but not necessarily for Task Groups or squadrons/divisions. Perhaps it would be more appropriate to apply a penalty to coordination if the numbers of ships involved in a combat situation if there were not Flag Bridge facilities?
As technology improved, CiC facilities cropped up, and they handled the fleet/force/group coordination more efficiently and faster (think Aegis cruisers), so perhaps flag bridge requirements could be met by CiC facilites as technology improves? If your assuming that command and control facilities are improving over time along with the rest of technology capabilities, than perhaps you could control/coordinate more ships with a Flag Bridge or CIC as the technology improved?
Perhaps as part of the Naval organization, there might be a requirement for "command points" required to sufficiently maintain the fleet/force/group/squadron based on the number of ships present? These command points are satisfied by Flag Bridge or CiC facilities, or by points provided by the commanders. Commanders organizational skills could be reflected by adding a command point bonus or skill, so you could potentially see a really hot destroyer squadron commander performing better than the competition, without the requirements of a flag bridge.
Sorry, I know I rambled all over the place on the subject.
I think the new screen is a great idea, and I do like the idea of tying in flag facilities and command and control into Aurora more.