1.) Currently, I don't think we have found a way to include a kill board for your other wingmen. Of course, your own kills and other stats will be tallied.
2.) As far as ejecting, that has not been implemented yet (as far as the player being able to eject). As far as I know, we don't actually have any ejecting pilots yet, but friendly players can be shot down and will "eject," that is they will tell us they are ejecting when their ship goes down and they will be alive in the next mission.
3.) Don't know. The team is working hard behind the scenes. Maybe they're just trying to give us more time to work?