My suggestion was to merge the AHs cross server, with the aim of making the economies more stable. At the moment, prices fluctuate wildly. If the AHs were one, like in other mmos, there wouldn't be shortages, and prices would be based on the attributes and rarity of the items instead of seemingly random arbitrary prices set due to convention.
Take for example Utsusemi scrolls. Every server has exactly the same means to get them in the first place, yet they vary in price by hundreds of thousands of gil. The effects of server population and the amount of aspiring ninja on the price are displaced somewhat by prices that have been fixed by convention.
Edited, Apr 11th 2013 7:58am by Demoncard