Now, while it was probably not intended, its extremely hard to tell what you want to do in this NRP, especially considering it takes part in an already expansive universe of WoW. While I can get the idea for it, there is very little to say what the idea for this NRP is. Is the RP going to allow very custom factions? How custom will they be compared to the other lore? Does it have to be based on that warcraft lore? What about other north EK regions, like Quel'thalas or perhaps Gilneas?
Very custom factions. Someone could play as, say Arugal in Shadowfang keep and amass a Worgen army in southern Silverpine, or make up their own character and start a new troll tribe in the old Amani territories.
I don't want the map to extend beyond the Lordaeron subcontinent, but there is still potential for most races to have a base in the given land. I was also going to exclude eversong woods, but the Ghostlands area would be playable for any potential Wretched/High/Blood elves.
The time period is also pretty much going to be a slaughterhouse, considering this is the period where the scourge and legion are best buds, and are curb stomping humanity in the process.
As a suggestion, you'd perhaps want to either expand your idea of the roleplay's theme or expand it's region is bit farther, and explain the rules and what not.
The RP will begin after Arthas has departed for Icecrown. This will leave the Burning Legion's Dreadlords locked in a civil war with the Lich King's forces. I was going to follow lore events as best I could, but if everyone involved went off the tracks it would leave room for interesting story potential.
At the start of the narrative everyone will probably be busy fighting the Scourge and Burning Legion. Events will likely follow with the formation of the Scarlet Crusade as secondary antagonists. It all really boils down to what factions people are wanting to use. If someone wants to play as the Scarlet Crusade I would come up with different antagonists that didn't break the lore too much.