It's been needed for some time doog and even as an investor I welcome the change. The risks of 100x were too high and could bring about huge losses if max profit was ever won, which was a tall order anyway given the odds of winning that insane amount. Not only is clam more protected now, perhaps people will choose to do more with their clam now rather than letting it sit with a high offsite on JD.
People may be hurt by this change but it is a needed one, for clam and for everyone who gambles and invests at JD.