Only thing I have been interested are exactly the things left on your list.
I would add “True” account wide achievements. Currently is a weird hybrid that sometimes works sometimes it makes no sense it isn’t account wide.
1.Reforging
2. Removing mythic saves after top 50 guilds
3. 10 man mythic after top 50 guilds clear
4. Targetable loot in your vault 5. Upgradable raid loot