Re: civilian Intercept
Actually you can read a pretty good book on Predator use by a former operator. Think of them as good at opportunistic surveillance/static target kills, but they have lag and launch-time-to-kill characteristics that might make them hard to use in a high tempo hot war against a peer enemy. 30 sec flight time for a Hellfire at their usual engagement range for example.
Countries should really ditch F35s, buy some good enough gen 4 like a Rafale, F18 Super or Gripen. Save money and keep an eye open on whats coming out of the gen 6 in 10-15 yrs time. Coincidentally that matches timeline on what capabilities autonomous air superiority drones might start to show as sneak peeks - an entirely different breed, totally unrelated to the current lot.
And what the China relationship will require - a friendly enough China does not warrant a trillion $ jet procurement mainly geared towards military industrial pork. And an unfriendly China will require a whole lotta more professionalism in said procurements than has been displayed to date in either F35s or with catapult-less carriers.