I don't know if someone has suggested this before anywhere, but it seems to me that people/guilds put a lot of effort into legendary weapons and it might be nice if they retained some use. If they got a click effect that would produce a unique-equipped gem that you could place into another weapon, perhaps with better stats than other gems, or that gem could imbue the new weapon with the legendary proc, it might be a nice way to keep these weapons relevant and recognize the amount of work that went into them in some lasting way.
What do people think? Would this be overpowered in some way i'm not seeing? Or go against the game ethos too severely?