I have nothing against gold squish, but you should not have announced it.
If anything I would encourage going for 95-99% of everyone's gold without announcing it. Here is why:
1. All of those players selling gold/coins for coins/euro start raising prices in AH and Trade on website, last November expecting squish will happen sometime around New Year. If you were farming for gold to buy coins you would notice this. They were picking extra profit just based on the fact squish is late. The prices gone higher now because everyone else learned what many of us already knew: Squish will happen again. By announcing this you gave time to those gold farmers to raise their prices.
2. Every year, in 2nd part of the year you are able to see players selling coins for euros in yell/say/trade/global chat. Last few weeks SW was full of those. If you were to squish their gold by 95% 2 years in a row maybe they would realize it is time to get some real job.
3. Most of the players complaining here donate 0-10 euros complain about their gold and Warmane rewards, like this server owes them something. Server does not live of your Ulduar, Eternal Shadow/Fire, Gems farming. People selling coins for Euros is something that affect us all and if this is the only way to do it I support it.
P.S. If you did not see this coming, please stop giving advice to Warmane how they should run their server. If you clearly cannot run your bank account in game, why do you think you can manage real bank account that makes this server alive and give paychecks to the people who work here.
Instead of being negative, try to learn something from this experience. Because I am just looking at my magic ball right now, and guess what it says: It will happen again next year.