Dragonsworn would be WoW’s incarnation of the Dragon Disciple, if they chose to go in this direction:
I did a post awhile ago getting my thoughts out on the topic:
https://us.forums.blizzard.com/en/wow/t/next-hero-class-dragonsworn-or-why-bards-necromancers-and-tinkers-dont-work/167221
And there’s a really fleshed out concept over on the MMO-Champion boards:
Suffice it to say, I’m in.