I don't know what measure will be taken, but one thing I'm sure: the measures to be taken should be general and not segmented between whtelisters and general investors.
Actually whitelisters and general public invested in different circumstances and got different outcomes so obviously they will be treated differently. Whitelisted people can easily recover their ETH and that is a must. Regular users got scammed badly but I can not Imagine why they sent ETH to the address without even checking if it is a contract on etherscan so this is kind of their fault too. Yes it was on official site. But so were the fake addresses on slac sent by slackbot which is an official channel and some people fell for this and some were smart enough to check.