Mythic Pendant and Ring Upgrade

[Chaim Nail]

if myths and arcanes must be untradeable, then what should i do with my myths after (if ever) i got the new best gears in future expansions?

All of us who upgraded our mythic armor+helm are stuck with them, they've become untradeable, so the only things left to do with them in the future is:

1) Stash em.
2) Liquidate em.
3) Wear them about town to show how awesome you once were