I do keep picturing it as very much like Marduum and Broken Shore.
Although, Sargeras' true form is shown as a Titan burning with fiery red flames, so maybe Argus will reflect something more like that - Firelands + Hellfire Penninsula.
fel-merald dream
I mean... we know what it looks like.
We were shown art.
It's a giant Marduum/Thal'dranath.
FFXIV - Maduin (Dynamis DC)
It would be cool if we come across some rebel dreanei who are still fighting back against the legion.
Oppressive yet elegant. It should look pretty, it was home to a civilization similar to the Night Elves in their prime. It should hold the treasures of countless conquered worlds. But remember Silvermoon, beneath the glittering golden towers there are things like that sweat shop. What seems nice on the surface should hold darker secrets. For example, Argus could have numerous examples of fancy artistic statues dotted around the streets that turn out to be complicated execution devices for misbehaving slaves. Or an enormous sparkling lake at the foot of a giant temple is the watery grave of all those who speak ill of the Legion. Argus isn't another staging ground for the Burning Crusade, it isn't a war camp. Its the CAPITAL. Every dark desire the Legion promises to grant should be evident here.
Knowing Blizz, wont be surprised if there are carried over beasts that look the same from Broken Isles... Demons I understand... But at least make the fauna and flora unique...
Like the broken shore but with more fel. Kinda the reason they made it a patch and not an expansion.
It will look like Netherstorm, but mostly a dark blue, navy bluish color in appearance.
Not all of it looks like green fel. The bottom sides are teal.
AAAR-GUUSS
WHAT DOES IT LOOK LIKE?
ABSOLUTELY NOTHING.
THAT'S RIGHT - SAY IT AGAIN.
I hope you're wrong, and they go the opposite direction. Not boring green molten core but instead a real alien world where the demons actually live, in a highly regimented and ordered society living in luxury, a society founded on constantly conquering and enslaving other worlds. I mean, give the demons some purpose, some identity, some agenda, beyond being generic bad guys.
But realistically yeah, it'll be green molten core.