I've been thinking about that Dragonflight leak, & I really want and like the idea of 'micro-classes' & 'class skins' & its actually to do with tinkers and necromancers. Hear me out on this.
OK, so, Blizzard only puts one new class in every 4 years? right? usually? Look at it this way, if you really wanted Dark Ranger every time we're due a new class (rightly or wrongly) then the peeps who want X or Y are hopeful. Then it turns out to be Z or no new class. So you're back to another 4 year wait. Class skins are a pretty solid way of giving people classes that would probably never be implemented about gutting other classes (I was Demo from Cata...) & I also feel a micro-class with one role and spec can't be as hard as a whole new class with 2/3/4 specs to balance and design around, plus, when the expac drops having a glut of new hotness to roll & level would be neat, I always treat leveling new classes as an activity I really WANT to do but I need to work on my main, I'll roll him/her and mess around but once I'm done with the current patch content then I'll look to level, since I left feb last year I'd love the idea of new alts to refresh my memories with, and the nostalgic kick of the old expacs.
I also really REALLY want a new class to start at 1, so I can do adventure isles and Northrend again, on something new. This all said, Le Conceptuel did make far too many valid points, that leak is probably more bullshit than fact,