Just here to share some thoughts on the idea of the Horde being ruled by a council rather than a Warchief. To start, I am not entirely against the idea, especially since it is the case of Blizzard basically canonising a fan concept, which is always awesome. However, there are fears, not necessarily unfounded, that this will make the Horde identical to the Alliance.
People say that centralisation is what leads to the Horde becoming tyrannical, but in fact it is what keeps the smaller tyrants, like Lor’themar or Sylvanas pre-BfA, in check. To just relegate all power to local rulers will only lead to more problems with the Horde’s less likeable races like the Forsaken: these have to be kept in check. Still, with how much power is given to the Warchief, I think it’s reasonable to have their own power be somehow limited as well.
The way Blizzard should do this, I think, is to present the Horde Council as a collegial but centralised body, that together holds the same power as the Warchief once had. By this I mean that, while new Horde laws would require the consent of the council, once passed, noone should be able to get around them.
To convey this concept in-game, all of the Horde’s races should have their leaders moved to Orgrimmar, or at the very least, send representatives. For example, Thrall, Rokhan, Gazlowe, Ji and Voss would stay in Grommash Hold permanently, while Baine and Lor’themar would send Hamuul and Aethas respectively. Grommash Hold itself could be rebuilt into a parliament-like structure.
Also, to show that the Horde is not just its constituent races, councillors would be more than just racial representatives. There will be a representative for the shamans of the Horde, its druids and its arcanists, priests of various faiths and veteran warriors like Eitrigg. This will show that the Horde is more than the sum of its parts.
Also, the Horde Council needs some name. The War Council? The Gathering? Perhaps some play on the Kurultai?