Well what is missing is the relation of the aircraft toward the world air flow friction, air pockets and turbulence , as for now the plane do not react much to the environment and make you think it's way too stiff. A flyby wire do not ovoid the aircraft of this. and it's missing or they must be accentuate. again you can have the best racing car with great racing suspensions but if you ride on a rally / country side bumpy road you'll be feeling it computer assisted or not.. pretty much what is missing a bit as well to the MiG-15 ( stiffness and raw ) well the Mirage do not need more stiffness ( assisted flight ) on the controls but more of what the pilot and aircraft are going through . The MiG-21 is better on simulating the contact with the weather world. this is a great start and need TLC. The cockpit head placement same.
FFB is desperately needed..