An idea for how Ogres would be a playabe race for the Horde faction:
Ogre's been a part of the horde lore for many, many years, in various ways. There is a clear direction that they would be fitting to join the horde, naimly the Brackenwall Village of Dustwallow March that is already friendly with the horde.
The idea is that there could be a ogre starting place in the mountains that seperate Barrens and Dustwallow March.
If you follow the numbers of the picture:
1: Imagine a main Ogre Mound, filled with horde representatives, blacksmiths and vendors and the like, which has a conenction into the dustwallow march, working much like any capital city with even a flight path on the top of the mountain.
2: Brackenwall Village, with a direct entrance to the Ogre Mound.
3: a starting area where new Ogres can kill troggs, maggots or even Quillboars?
4: a mid area, remenisent to all the other starting areas, where players will level between level 5-13? This area would also connect to the Ogre Mound and out towards the Barrens, close to Camp Tarajou.
One could imagine several lore implements why these ogres would join the Horde, But on a surface level Ogres would be a badass addition to the world of azeroth. With limited clases such as; Warriors; Shaman; Mage; and Warlock (and maybe Rogue for the comical effect lol).