I won't speak a lot about radars: just stuff that will allow pilot to detect targets on farther distances.
And what about stealth. It can be as a special cover, making plane heavier but more invisible for enemies (will cut the distance of detection), as a special mechanix, that will connect invisibleness with the shape of the fuselage like it was made with Drag. I suppose, this is excelent idea for building fighters or special concept aircrafts of the future.

PS: Sorry for my english, so just try to understand