If hdtv, leds and digital comms in general been advanced enough I suspect Concorde would have been built with tv feed for landing and on ground driving. But then it would also have had totally different engines, fuel management, active flight control surfaces, you-name-it.

In order to have improved LEDs and like, you need all the digital technology we have including two or more orders of magnitude improvement in CFD and materials sciences. The same ability to grow highly pure silicon for chips empowers growing turbine blades. The same ability to lithograph chips empowers all kinds of material tech.

It stops being concorde.

If the Valkyrie hadn't crashed we'd have more things like Valkyrie.