The bazhaar is great but there's the issue of having to meet the person in game to make the trade. Timezones, work, and daily life sometimes makes it difficult make trades. A cash on delivery system would make life easier.
Also, PLEASE MAKE THE GUILD HALL MORE INTERESTING!
Not Call of Duty. For those who may have been confused or did not read the four sentences of the original post.
They want you to arrange a meeting with the other person to make transactions more personal.
Guild stuff is here. Your suggestion for new guild hall content is void because you are not suggesting anything, merely screaming baby wants their bottle.