Well, the sector bars are historical, sort of.
Radar can detect an inbound flight. And they can detect the general vicinity and altitude of it. So, IMHO, it should be there. Without it, the amount of "no opposition" captures would increase dramatically.
Maybe it should be less accurate. Then again, we do not get altitude information on inbound forces.
One thing we could do away with is the dots, *unless* there are other aircraft of the same sie nearby or the enemy is visible from our fields.
------------------
StSanta
JG54 "Grünherz"
"If you died a stones throw from your wingie; you did no wrong". - Hangtime