|And it is more efficient to concentrate all fire on a specific target
In Galactic Civilisations that is correct. Otherwise it's not. AGAIN I'm mentioning Nexus and I sort of wish it would be the last time. But the battles are just so phenomenal it's hard to forget.
In Nexus you have weapon types;
- shield destroying weaponry
- hull destroying weaponry
- devices destroying weaponry (powerfull lasers, fighter crafts, boarding craft)
- point defences.
Ships have shields, so you need to destroy those first - unless you are destroying individual devices like engines or something.
So some of your weaponry is firing at the shilded ships, other weaponry at the ships with their shields down, lasers firing at devices you wish to disable, your point defences are firing at incoming missiles and gunboats, your missiles are flying towards distant targets (since they would destroy your own ships as well if exploding too close), ALL AT THE SAME TIME (if you have enough power on the ship). And all with totally realistic movement (physics).
In this case it would be a waste of energy to fire with all weapons at the same target, since hull destroying weaponry would do practically nothing against shields and are better fired at a target with shields down or not at all to save energy, your gunboats would be thrown away against ships with good point defences etc. etc....
I guess you see the picture. Definitely a treat of a space opera.