Apaches equippes with NLOS missiles,Not yet but soon we will see it.
We shouldn't expect Air defence frigate role from FACs . Both RAM and FL3000N are best defense systems against cruise missiles since they aren't launched vertically.
Moreover FAC's mere threat is cruise missiles.
UAVs , Fighters and other threats which fly at higher altitudes are the business of air defense frigates and land based long range SAMs.
Remember our ADA-class has just RAM.
Drones equipped with guided precision bombs.
The war has changed remarkably since then, i am sure we will see some AAD capability on Ada class earlier than MLU.