What I'm gathering from what you're saying (please correct me if I'm wrong) but are you under the impression that they are getting rid of your old gear, like deleting it from your vault at some indeterminate time? If so, I do not believe that will be the case. Old Legionaries will still be available, it's just, after some time, they will no longer be a viable choice to use in combat. I hate this method of forcing players to move forward as well, but as a veteran MMO player (WoW, Guild Wars 2, Ragnarok Online, Elders Scrolls Online, Wild Star Online) it's a time proven concept, and as much as I don't like the idea of some of my most favorite weapons becoming obsolete, I have come to the conclusion that I can find new ones that I'll learn to cherish. Hell, I still have my Thunderfury legendary from Vanilla WoW, hits for nothing, but it's the nostalgia that is invoked when using it that made me keep it through out my WoW career.