2) How is that different from people seeing your bardar under the old system and coming after your mission?
Not having an account anymore,I assumed the current "all seeing" dar setting is showing enemy bombers all over the map now as a dot or plane icon?
If so, that would make bomber hunting, especially long range strat raiding / long range mission ones much easier, by an order of a magnitude or so.
As said before, with the old darbar you still had some amount of uncertainty: Bombers of fighter? How many? And where is he going exactly? To determine a vector, you had to follow the darbar and make your guesses, also a change of direction wasn't visible imminently.
Watching the map and figuring out the vector, estimating altitude and possibly raid composition was actually a very central part of the fun for me. Seeing enemy dots all the way would have reduced bomber hunting to a mere bomber harvesting, I could have simply taken a 262 and chased them deep in their territory when they were still climbing.
As a bomber pilot myself I'd say the only proper reaction would have been to take off behind even further, taking only bombers with ample firepower and climb, climb, climb, climb...
(No, you can't simply "get escorts" for long range runs most of the time.)