Just a suggestion
New introduction of upgradeable mythic and arcane gears which can be obtain from locks drop and through a series of quest or by looting from elite maps.
Lets say the player need 10 dragon scales to upgrade mythic armor these scales can be obtain from locks and quests.The items will be tradeable.Once all these items are gathered they can be crafted to evolve to a new mythic armor.The same process goes to other mythic/arcane gears.
This way mythic/arcane items will retain their value and wont easily become obsolete.
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