For people who want zombie modes. This is a pretty old game, as it stands armor games don't read comments, they won't add any more to this, however you can hope. If they make another one, they may include it. Probably not though, this is supposed to be realistic.
You should get Experience for completing quests, otherwise their isn't much point in doing them, all the gear I have is way better than anything I get from quests, apart from the main quest and the ring side quests.