Let's just take this serious for a second - How is this going to work? Just remove all the gil from one day to another? What about the folks who played for years and earned a steady amount of gil? Speaking of maybe 50m / 100 m / 200m. Are they just losing it? With no compensation? Just bad luck for hours and hours of gathering, crafting and MB caluclations?
I wouldn't even say that I'm completely against a remove of gil (I'm in favor of adding something to control the gil flow better because right now we have the super rich and the super poor and it gets worse) but I wonder how this would be effective implemented.