@Splash, depends on your perspective. If your a donator or someone that has worked hard for your FSP, then you want a better exchange rate to cash out FSP.
Meaning, if the rates go up, people that are shooting for top hoarder medal, doing gold upgrades, or making guild deposits will be more inclined to exchange FSP for gold. So if you put up a marketplace listing for a descent price .. it will be exchanged quickly.
In addition, the cows have artificially kept MP prices from going up for the last 6-9 months with cave events + gold upgrades. Would be nice to see what the market actually looks like.