This won't happen because some of the weapons from those raids were too op. Vision, fatebringer, vog shotty, black hammer, hunger (maybe). They literally made some of these weapons exotics because they were so good and made the game too easy. I hope they eventually do this as VOG was great. I'm hoping they rework some of the Crota raid to make it stand with VOG and KF. If this were too happen I'd bet money the weapons/armor would be reskins of the originals with different stats/perks.