I'm just throwing out an idea!
What if instead of incividual control of ships with options such as broadside CA made the decision to allow control of the
fleet. So for example I could choose my fleets formation and then once the battle has begun I could give them orders such as tack-in-succesion and stuff like that. In single ships battle you would get the individual control. Another thing in a fleet battle the admiral would have to signal the ship which is to perform the action creating a but of time lag which is historically correct. perhaps they would add a tech about flags to add more rapid communications. Just voicing ideas tell me what you think!