One of the current issues that the developers are looking to solve (I believe I read this on one of the Reddit Q&A sessions) is the lack of traffic in most of the main cities. This occurs in large part because there is very little reason for one to visit any city apart from Lion’s Arch, especially once they pass the initial stages of play in a character.
In order to push back against this (to some degree, at least) I propose that a character be allowed to use its home city waypoints for free, from any distance. This makes it more convenient to go back to your own city after you’ve been adventuring, in order to sell off extra gear, use the market…or whatever it is you need civilization for. It focuses on the cities as hubs for commerce, and limiting it by race nudges people into going places other than Lion’s Arch.
This obviously won’t fix the problem all by itself, but it would be at the very least a step in the right direction (and especially convenient once you start to get further afield).
Thanks for reading