It’d be cool if Illidan sent a message to his order & former followers that they need to stay Demon Hunters, as Demons lurk in the shadows trying to prepare their ‘Revival to glory’ or seek their own ambitions – stating he has slain many more whilst as a warden of Sargeras, along with those of who had come to investigate how to free him.
Then have Illidan say
"… But you need to become more than Demon Hunters … Demons were not the only force to investigate Sargeras for their own nefarious purpose. Nor will Demons be the only force of darkness seeking to claim Azeroth. You must hunt the void denizens that are malicious, merciless & cruel who seek to conquer all. The denizens of the light who seek to bind all to their will. Death that seeks to claim all to its secretive ethereal realms beyond the Shadowlands, and other powerful forces of grand magnitude.
Make no mistake, the titans may be foretold as the ‘cosmic force of order’ but WE are the cosmic force of balance! Go, and enact our will. Show them the folly of their ways, that we will claim this realm – Not them. Show our enemies, that to our eyes – (Most figuratively of cause) – That if they unwisely choose to stand before us as adversaries. To us, they are demons. And to that, show them: What. You. ARE!"
In correlation to such:
- This would be a great way towards a questline to creating more Demon Hunters in the name of Illidan’s message, needing more to hunt down nefarious forces as Demon Hunter numbers dwindle & become stretched thin
… - And as per above
Thus coming to the conclusion to teach their ways to other races, should they choose to dedicate themselves — providing the class of Demon Hunters beyond Blood Elves & Night Elves, so other races can show their worth in their order. - Put in an epic questline / starting zone for the new races of Demon Hunters for their journey (and show some who failed, falling to corruption or seeking to betray).
- Perhaps also put in a questline for the OG Demon Hunter races where you help out the new races of their order, so they don’t feel left out.
To make this thread more fun, aside from sharing your thoughts on the above 
– What race of Demon Hunter would YOU like to play? Whether staying as the originals, or a new one & if it were to have a backstory to becoming a Demon Hunter; what would you have? 
