I do wonder with the change to the market board tax system ( no longer get a discount based on if you buy from the city a retainer is in):

What is the point of having retainers set to a specific city? Seems to me that it's yet another rushed band aid fix without much thought to the ramifications of other systems.

A system that has been in place at least since 2.0 when I started playing. Why have they determined that this is the right system to change at this time 5 years after the fact?