Seeing how the Horde is bland and outnumbered player-wise it needs a race that is appealing and no race would help the Horde other than the Zandalari - the aesthetic introduced in Cataclysm - the basic Night Elf male skeleton is perfect for the male Zandalari with some minor modifications, the normal female Troll skeleton works for female Zandalari very well out of the box.
The Zandalari for me look very regal and even nice but in a brutal way, I would very much be tempted of rolling one to be honest given the chance. The orcs are hunched and have too big shoulder items, I dont click with Tauren, Forsaken are Undead and I am not the fan of playing with them. I did have Jungle Troll on retail for quite a lot of time and a chance is in order.
And adding the Zandalari opens up the possibility, if the developers so choose, of adding the whole isle of Zandalar with a proper city for the Horde. This in turn lets the developers add Kul Tiras City as a proper large city for the Alliance to keep the number of capital settlements equal.
The isle of Zandalar is also big enough that it can cover leveling all the way up to lvl 20. Even Blizzard gave Azhara to the Horde as a 10 to 20 zone to balance the leveling zones who favoured the Alliance. Offering a new leveling experience up to level 20 will go a long way to cathering to new players, especially for the Horde.
The Zandalari also open up the door for Horde Paladins, if the developers are open to it. The Zandalari, as the priestly caste of the Trolls could very well come up with a mix of Priest and Warrior hibrid that could be Paladins mechanics wise.
The (Broken) Draenei could get a zone to cover leveling from 1 to 10 in the north of Moonglade and after that they would be funneled in Darkshore to continue leveling. They would be too few to have a proper city and they should get their own corner in Darnassus. Out of all the Alliance races, the Night Elves would be the ones in the position to help the Draenei and it would add another Alliance race in Kalimdor.
This would also open the Alliance up to the possibility of having Shamans, if the developers are open to it.
I have also seen threads proposing Ogres for the Horde, but I feel it would not help the player count for the Horde, which should be something the devs think about. The Zandalari, on the other hand, bring quite a lot on the table, from lore, to looks , to even architecture. The Zandalari are a big race numberwise and would help the Horde not feel totally underpowered story wise.
![Image](https://wow.zamimg.com/uploads/screenshots/normal/821780.jpg?maxWidth=2400)