While I understand the danger gil sinks could put the economy in currently, you honestly believe Yoshi-P would allow that?

Take a step back and let's look at some facts.

1. The game can be changed.

2. Legacy servers have a large surplus of gil.

3. New servers will not have to worry about end game economy before patch 2.1 and 2.2 hit.

I am under the assumption that these huge hits to player wallets (in particular player housing) are designed to drain gil from legacy servers, until such a time as the devs think that all server economies are equal. Which is probably when we can expect Legacy character transfers.

In short I don't think you should worry unless you are scared for you own bank roll as a legacy player with too much money. They have a plan in place to maintain economic balance.