About the disenchant, there is probably a mass disenchant option available. Go to a card, crafting, disenchant tab. On the left side there is a button that will disenchant all copies above four of cards that you have at mythic. If you don’t have it, it will come soon in an update (PC/Mobile already has this), but I think you probably have it as Consoles are close behind PC/Mobile now.
The option to upgrade traitstones will probably never become available as that impacts the economy in the game (and their ways to earn).