I like this suggestion a lot. At one point in the game you were able to twink out a level 60 and acquire a high rank in PvP to obtain a set. The set was never removed you just needed to work for it. PvP doesn’t really change in playstyle and balance varies all the time thus making it easy and hard for some classes.
I think a suggestion like this should be on the official forums but with some visibility from the new council. It would also cull out those that suggest unobtainable items remain unobtainable because of difficulty — we know it a piss poor excuse for “I had my share, f- everyone else”.