I think that year 1 exotics should be upgradable. Just nerf the ones that were OP like thorn and G-horn. It seems pointless to buff necrochasm and then leave it to die in year 1. Many of us grinded for that weapon even though it was a steaming pile of crap. They finally buff it and it will become obsolete. Everyone that has it, kept it because we were hoping that it would at least become semi-decent one day. I hope that bungie implements infusion into year 1 exotics. I really careless about the legendaries and etc.., but exotics should stay around.