I think the new system will help promote combat.
You can prepare for bomber attacks quicker, prevent them from closing bases and be at sufficient height to attack before they bail out.
Bustr is right pork the radar along the front before your run if your scared of attackers. I'd also have a wish to go alongside by making the radar tougher to kill.
This does not promote combat in general. This promotes a very specific form of combat: the crap-shoot fur-ball. This sort of thing negates the advantages of certain planes and otherwise legitimate tactics and strategy. It artificially shoehorns players into certain types of engagement geometry instead of letting the various aircraft characteristics organically create the conditions of combat and their associated rules.
Adding on that you would want the radar to be further hardened is even more preposterous. I mean seriously, why don't you guys just demand what you
really want?
Screw all this MA stuff right? If you want to "promote combat" how about we just have one nice short canyon with a concrete roof. Just like the DA canyon but with no escape! Then we can remove every airplane in the game except the Ki-43! Then we can cram 600 players into this death tunnel and everyone can dance around each other like fly's next to a light pole.
That, or we can just tether all the airplanes together with cables and fly around in circles till someone gets bored.