I agree the effected NWA pilots should be restored, BUT, if we're going to chase down every unfair hiring scenario, lets go after the DCI people that transferred in with their longevity and try to "me too" on that. After all, management (a few pilots), gate agents & rampers got a whole lot better deal coming to Delta than pilots did.
From one guy who has "chosen to be junior" to another, you'd be better off just being satisfied with what you got out of the merger and going on down the road. Minorities have nearly no power ... junior minorities have less.
But, there are probably enough of you to get a resolution passed. That is the route you should go if you are serious.