I think we should discuss the longer term view...
...What are we going to do about high level characters in the long run? Is 16,000gp enough?
On a tangent, it will not be that far off that we need to discuss what to do about characters reaching 20th level.
This sort of combines SK's idea, just starting the tapering off from 17000 instead 9000. I think this handles the high level characters well enough. You get that high, you might as well be commissioning stuff anyway.I vote YES for the immediate bump to Metropolis size.
For further discussion, I agree with ss21 - I'd say reduce the chance of finding an item by 5%/1000 GP for anything over the Metropolis limit of 16000. I'd also say allow commissioning of items of any worth.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.