Any airframe without reduced radar cross signal is almost useless on heavy contested wartime if oppenent has got one,this even for awacs planes,becuse air to air missiles getting longer ranges,and awacs planes can not detect stealth fighters from a safer zone.
I guess anka4 will not be an unmanned fighter like kızılelma,it must be a bigger version of anka3 with two engine ,thats a big step but with little effort
There is a long article on defence turkey.Aselflir 500 is for general puRpose use,600 has larger gimbal for high altitude use-over 40.000 feet and merops like 500 but for performs better for unusual situations like fog,dust etc…