Exotics Should ALWAYS be available to upgrade to max. Legendaries I'm not sure about. Making them obsolete makes running VoG pointless unless they change the rewards, plus there are some legendaries I'd love to use but really can't atm cause their weapon class got shat on (Summoner, Wolfslayer's Claw). That said, legendaries are changing. Bungie themselves have even said that they want new weapons to have "tradeoff" perks rather than perks that only buff the weapon's stats. And to be honest, I am kinda sick of seeing the Fatebringer everywhere though I love using it. I do, however have a possible solution for legendaries. Since Bungie seems to make raid weapons top tier legendaries anyways, they could add a relatively rare drop (for all raids) that can be used like etheric light to max out a weapon or (perhaps just raid weapons?) and TTK weapons would of course come already at max dmg. This would push players toward TTK weapons but still leave older ones as potential options. Exotics and armor though should be much easier to max.