Perhaps it lacks the depth of Vanguard, but that's to be expected nowadays, the online games are just pure rubbish for the most part, from what I currently see. The awesome days of the Everquest, Ultima Online, City of Heroes and Vanguard games are behind us, sadly. Far behind.
Pantheon does do the classic archetypes rather well, and the visuals/fluidity of the game environment is pretty spectacular. I would gladly devote some time to fully exploring the game upon release, heck, I bought quite the starting package, but if I don't see old mates ( or new) showing interest, I'll likely not play it. I'm well weaned off online game right now and it would take something truly special to immerse myself once again.