Ah, Scorpion. Lovely concept that I can see working for those roles for which it was conceived. Light, simple, quite inexpensive to buy and operate (£3.000 per hour?).
Now, QRA(I). Where is the speed, the AAR capability, the AI Radar (I-Master is a neat little box, but not for A-A), the datalink, the long range nav kit?
Naaa. Apart from all that does anyone think that any government buying F-35 is about to buy another platform to the things that "they don't need F-35 for"? Politics.
Now, find me another aircraft in the inventory (current or projected) that will do AD.