Are Hobs more popular than bugbears? I hope my favorite goblinoids at least get the quick write up treatment. Also, I'd like to see how they do shader-kai, and I honestly don't care if there is a whole fluff write up. The 4e writeup was full of stuff that made me roll my eyes, and earlier descriptions I found boring, so I'm happy with my own fluff for them, but they are a tricky race to build mechanically, so an official version will be helpful, even if I end up deviating from it. (If they don't get something along he lines of either a teleport, shadow movement, inaubstantial, etc I'll definitely deviate from it)
my my main concern, though, is that IMO, is that the game should not have only one of a given broad type of race. There should be multiple uncivilized brute races, multiple tricksy small races, multiple aquatic, wilderness/nature focused, avian, underdark, shadow, extraplanar, elemental, etc races. One of each makes the game feel like it's trying to fill a grid, rather than build worlds.
Also, Kenku and aarakokra are about as similar as elves and dwarves, at *most*.