I'd actually prefer the removal of the redline in favor of shifted spawns in over time. The redline can be a safe zone but if you'r going to get pounded everyone will end up giving up and stick around there until match ends.

Resistance 2 had this concept implemented as a way of randomizing spawn but also ensuring teams can't simply hold a specific position and "box in" the other side. They had to literally hold an objective and make a barrier of troops. It would also forcibly make suits into more "hard positions". Yeah you're scout can still scout but they can't really go around and Nova Knife everyone or go solely for stealth kills. Logis would have an incentive to do the support role for points and assault + heavies would be more situated for their intended roles.

The general point is that once spawning is "predictable" you can counter it very effectively. Once its random you can't just win by boxing in someone. It has to be a match and anteing the odds a bit also means more challenge for either side.

I could abuse this.

This could be abused in combat near redlines. Although a person in redline could not kill anyone, they themselves are un-killable. This could lead to drawn out engagements near the redline as players bob in and out of the redline to prevent themselves from dying.

I like this idea though.

But I like the idea of just reducing damage as well.