IMHO Austria has ordered enough for their primary fighter needs, or are they planning to deploy them abroad?
If earlier reports of only equipping them with Sidewinders and cutting on avionics like the RWR and counter measures are true, then they sure need more capability. If they just want some AIM-9 equipped fighters to police their air space, they could just have bought a lighter, more economical and less sophisticated fighter. They should invest in advanced capability for air defense primarily.