No and no again radar don't work as a fov monitor but it work with heat signatures if you want to hide from some one you can reduce your heat.
https://www.youtube.com/watch?v=u_hP7MV89s8
But that strategy only works at medium to long range when you've got time to drop out of visual sight and power down. With target loss suffered due to line of sight, it adds another dynamic into the situation. It pushes both the pursued and pursuer to rely more on their skills on the joystick instead of relying on instrumentation all the time.
Seat of the pants flying can be fun and tactical if you know you can literally skim around the surface of large objects trying to shake off that lock with both ships in extreme proximity to each other. Its a tactic that can be used in really close combat scenarios.
And forget radar and realism arguments. Its about fun in a game. If we want to go the realism route, I'm sure in 1,300 years time the ship would do all the automatic firing as well as the targeting - where's the fun in that?. In fact there'd be no need for a pilot at all