So, since in C# Aurora our Beam FCS Systems can attack multiple salvos, and since Missile Tracking Bonus has been implemented correctly, I would assume turreted 10cm / 12cm Lasers and Mesons would work well in the Area Defense role, since they could potentially strike multiple missiles before they managed to close the defense envelope. That would also make CIWS much more useful if the Tracking Bonus also applied to them, since they have ECCM and FCS wrapped up into one making them useful for leakers.
Also, I could see CIWS being more useful anyway, since ECM / ECCM has become more powerful anyway.