They can do a bit of that and a bit of that approach, actually that's what I'm counting on - so they can have certain regions, like borderlands and deserts, pushed to the max in terms of size but no worrying about how much filled with content they'll be. This may allow them to paint a picture of massive South, not some highly condensed landmass smaller than the entirety of Eriador which would only make it feel like one kingdom rather than kingdoms.
That said, yeah, I doubt we're going to Far Harad anytime soon. Once Umbar is done, then I guess Nurn, for next expac. Or perhaps even start that Frodo's journey back home. Would be about time.
My guess is that, just going off the game's current overall scale, Far Harad would be a CardoSwan zone immediately south and east of Umbar - provided that Umbar also ends-up CardoSwan-sized. It wouldn't be like "off the map edge" - it would end up closer to current Middle-earth. Think of it as the distance from Fornost to say Caranost. I also want to see a massive South- but I'd be fine if that translated into like a bunch of CardoSwan's built adjacent to each other.
Cheers!
Landroval player; I am Phantion on the forums only and do not have a corresponding character in-game with that name on any server. Cheers! :)