I think they should remove the instant defib. Currently you just have to tap to defib but doing that only gives 50% health back. Holding on the button to use the defibrillators for about a second gives 100% health back.
I think they should just force holding on the button for the second and not allow the tap to defib option.
Having always played the medic role in the entire battlefield series I do think the current setup causes far too many revives to happen... Technically giving me too many points 😉
Obviously if you get revived and then killed quickly you can't be revived a second time, which is how it works currently.