Whether anyone is roleplaying in Orgrimmar depends on whether there are guilds passing through at the time and whether there are public events occurring elsewhere. Not many roleplayers, especially not casual ones, have the time or patience to stick around in a mostly empty hub all night in the hopes that someone else will come along.
Stromgarde, Stormwind, Boralus, Duskwood and so on have all attracted dedicated communities that have achieved the necessary critical mass of consistent, regularly available RP that then snowballed to a larger side as they drew more roleplayers, and I think that’s what Orgrimmar needs.
It needs a dedicated community and/or guild/s of roleplayers with characters primarily interested in the city of Orgrimmar and roleplaying in it, to the point where they can maintain a stable population of roleplayers almost every night that encourages casual roleplayers to engage with them and trigger the snowball effect, to the point where those casual roleplayers might stick around even on nights when the community and/or guilds aren’t present.
But who’s so inspired by the thought of roleplaying in Orgrimmar that they’re willing to devote this much time and energy to it, and are there enough of these people to make a revitalised Orgrimmar a reality?
Maybe if I was possessed by a really compelling concept, I’d give it a shot, but right now, I don’t have any character concepts that make the thought of lingering in Orgrimmar seem rewarding to me.