Well, the best answer to that is that we’re very deliberately trying to get people back out into the world
If you are, Mr. Chillton, you've done a terrible job of it. Removing Have Group, Will Travel won't do anything to increase world populations, and if anything will actually lessen how often people are willing to leave the Auction House/Trade chat. The introduction of cross-realm realms is also going to dissuade people from going out into the world because PvP and dungeons will become the path of least resistance since you're not competing with 10+ other realms for quest mobs, resource nodes, or quest items.
World bosses, while a nice idea, won't impact anything either because of how long their respawn is vs how worthwhile their drops are (that is to say not very unless you're a tailor or JC) and dailies get boring after the third week of doing them. Without head enchants or shoulder enchants being the carrot, rep grinds become pointless for everyone short of vanity item hunters. Doubly so with the hyperrestrictive vendor filter you've put into place making it so that people can't see what might be available for alts (if anything, since dungeon gear far outstripes vendor gear). That you can no longer choose what quest rewards you earn also removes the incentive to quest since you can no longer get transmog items or extra gold from them, and the story on Beta has been as laughable as it has been in Cata so that won't be a draw either (Prince "lol, they kidnapped me and abused me, lets team up with them like nothing happened, lol" coming immediately to mind here).
If getting people out into the world is your goal then you need to stop taking away options, start giving them back, and make the world a compelling place to be for the numerous reasons that people have to play the game. Nothing you've done or implemented in the beta so far even comes close to addressing the things that lead to people camping in a main city, and nothing announced shows any promise either.