500 RPM corkscrews and 50Gs are firmly in "missile only" territory due to the limits of material sciences. The square cube law is a harsh mistress and engineering is a game of trade-offs. If you want to design a re-usable platform it's typically better to concentrate on other things like sensors, stealth, speed, networking, and payload which could allow you to get a shot off from outside of the enemy's range or before they are even aware of your presence. It would be interesting to see the inevitable version of this contest for BVR combat but I suspect that's going to end up being classified territory given that it's much more relevant to actual modern combat. AI systems will certainly play a huge role in future fighters but it will probably be more in terms of perfect coordination and execution of long range aerial combat rather than something like dogfighting.