That's one way to destroy the market, there are a lot of people who camp on irc and at the slightest hint that there might be some good changes, some bad changes or changes at all to different pieces of equipment they will stock up/get rid of theirs.
The market was introduced in order to allow people to move thier heirloom points around, by having these heirloom changes then you're effectively just removing that method of player interaction.
When you've sat and watched so many changes going past in this game, i'm sure you've seen some but I pretty much guarantee you that there are people out there who have seen bigger changes, then you'll come to terms with the fact that it's much easier to adapt these days than it used to be.