I don't think so. they don't have a niche in-game.
cloth agility? would need new gear to be created;
cloth int melee? it would be easier to bring back cata melee demo locks lol. besides, priests, locks and mages already wear cloth int gear, there's no room for more people wearing that;
leather agility? that's already being used by rogues, druids and monks, there's no room for more people wearing that;
mail or plate? demon hunters have always been described as light armored. mail or plate is too heavy for them and that would break class characterization. which is badz;
if you want a light armored fighter that dual wields and fights fast from the shadows, you have the rogue;
if you want a light armored caster that wields demonic power, transforms into a huge muscular demon and ignites himself in fire, you have the warlock;
if you want to be both things... well, maybe you are wanting too much.
save my words: if we get a new class, it'll be a mail wearing class with ranged weapons that's totally different from hunters from a ideological PoV. probably tinkers (though I myself hate the idea of a tinker class).