Still hoping KI might toss this idea around their think tank. A bazaar in the main entrance area of every game world. I'm sure this has happened to many of us. Let's say you're focused on questing a game world and your backpack gets full. Quick sell is not an option because if you're like me, you like to get the full amount of something when you sell. (Example: selling an ice flow jacket quick sells for 917 gold. If the same item is sold at the vendor in the bazaar you will get 3,730 gold.)
Here's another scenario for needing to go to the bazaar in WC. What if you just leveled *woot* and you want to upgrade your gear, but don't want to spend a great amount of time trying to find the specific vendor who sells the specific gear type you're looking for. Once you find the vendor, then you only have a few choices of gear to choose from. Oh and also, that same robe you were going to sell in quick sell for 917 gold, you will only get 933 gold for at the robe vendor in the game worlds. Eliminate all the extra gear vendors and make one bazaar.
Granted, I know many people who have multiple accounts and leave one wizard "parked" permanently as a portal wizard at the bazaar in WC, but this is not the case for everyone.
Getting to the one bazaar we have right now requires porting to your home and if you're not a crafter, fisherman or lower level wizard, chances are you don't have a tapestry crafted to go to the bazaar. So, ravenwood, commons, shopping district, olde town to bazaar to sell your stuff before going back to questing you were so focused on. Hopefully, you remembered to MARK your spot before leaving your quest.