I feel an idea like that would cause too many people to aim at the few enemies on a flag, rather than the greater number of enemies surrounding the flag.
Why should you get penalised (a lot less points) for taking out a stinger guy locking your chopper, than trying to get the last hit on somebody standing on the flag that will die anyway because everybody is competing for the big points?
If tweaked (50 pts any kill, lower bonuses) it could work…but I think I still prefer the current system in BF4. We already get extra points for killing people on flag locations.
I’d rather they gave extra points for reviving/ressuplying/repairing on flag locations.