Idea is that you don’t have to run up and down, just to buy or sell items which you own in bank. When you open “O” you would not be able to pick items from there. You could preview what you have, and sell or buy them at Trading Post. ( just like crafting stations, but preview, buy,sell option)
Wish I could get back to GW1.. PvP-GvG. It feels like we are outcasted, not desired or rewarded..