I feel like I see this repeated in every one of these “what’s the deal with hubs/x community/state or rp” threads, but the “be the change you want to see/get the rp going yourself” is the greatest non-advice anyone can get on this forum.
I have seen plenty of times when single person provided RP for hundreds or people on campaigns, but those are one time things. As a member of a guild that has daily events, I know that one person can provide RP regularly to a guild, but both these examples have one thing incommon - the person already has a receptive base to do stuff with. One person does not a hub make. Was there really a bartender in Ratchet if nobody saw them?
The idea of making big public events to bring people in is unsustainable, it would be full time job and one that would get old really quickly, if someone has to constantly pump out content for the masses with everybody just tagging along but not providing any content in return and knowing the moment you take a break, people won’t show up and all your work has been for nothing, what sane person would put up with that?
My personal opinion is that the Horde just simply attracts gamers who prefer to be out there in the world adventuring, camping under the stars etc rather than staying in hubs. While I am sure everybody would like a hub to come to resupply or rest ic, hang out and meet new people and boast about their victories when there is no guild event happening for time to time, majority of the horde playerbase would simply not stay in that hub for long before leaving for an adventure again.
Barrens saw a lot of activity for a while recently around and during a campaign and it is Horde-core zone, it was great seeing people moving about, running into each other, using all the cool spots in the zone, it is in my opinion much better than Orgrimmar, but since someone mentioned the lack of buildings, you may want to look into newer zones with Horde bases, Boralus and Dalaran are doing fine, maybe looking into Zuldazar or something in Northrend could work, or there is always Silvermoon for the more city dwelling folk, which again is just simply city better than Orgrimmar. I don’t think you can do much better than Barrens hubwise in Kalimdor (but I do think a true Horde hub would be in Kalimdor, like I said, Boralus and Dalaran have managed to make RP going in newer zones, so who knows).
Two bonus points for the conclusion before I go back to lurking:
“Quality control” and lorebreakers or even straight up disgusting characters people keep bringing up as a reason for Orgrimmar getting abandoned are the same issue. You simply can’t do any sort of “quality control” outside of a guild or community, but not in a hub, zone or the game in general. That’s what GMs and CMs would be for if they weren’t utterly incompetent, lazy, useless, overpaid bottom tier trash that they are over at Blizzard. I am no lore expert and I would prefer to get a friendly whisper rather than making fool out of myself with something like being openly a demon, scourge or enemy faction char in a hostile faction city, but I think everybody knows that people who rp those don’t really care for lore and would take somebody telling them about it as toxic.
While I wish that forsaken gamers would get some cool lore, zones, transmog etc along with everybody else, I don’t think RPing based on datamining is very smart, especially when it is just some possible hints/assets or whatever, not even a full questline (I am not really up to date on datamining, so I could be talking nonsense here), but we all know nothing is definitive until it’s in live game and even then we know Blizzard writers motto - “Time is a tangled web, don’t dwell on the loose ends.”