After all these patches and changes I think it'd only be fair to start again with a clean slate. For example, someone's KD would've been a major factor before the Nerf of a Vex Mythoclast. This way everyone plays with the fair version of the gear.
Also, for the new people who joined the game this past month and are just leveling their characters. Its not fair for us to make fun of them because they're new. Again its only fair.
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It's not suppose to be fair when there's RPG elements to a game. That's why there's common, uncommon, rare, legendary and exotic gear and weapons. Why would they all of a sudden make the game fair if it wasn't suppose to be in the first place. If you wanted to get good gear and weapons to be up to par with all the other players just keep playing until you get it.