The market might or might not crash depending on when is this changes implemented. If the change is implemented before the market matures and stabalize, then you should be able to see a very visible downward price adjustment. If the market is already matured, then we'll probably see only small adjustments. Things seems to work well in 1.0 because there are so little players in 1.0, so price movements to equilibrium level will generally be way slower....so you probably won't be able to tell the difference between both system. Trading in a small market is quite different to trading in a large market.

I think it is relatively easier for players to make money in a small/undeveloped market, or in a market with a lot of constraint, or where information is hard to obtain because there are less competition.